List of All Photos Displayed on This Web Site

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Anna's Hummingbird in flight - Sierra Vista, Arizona

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Black-chinned Hummingbird in flight - Sierra Vista, Arizona

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Polar Bear cubs playing - Arctic National Wildlife Refuge, Alaska

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Dalton Highway with blowing snow - Atigun Pass, Alaska

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Ground blizzard - Atigun Pass, Alaska

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Polar Bear cub at sunset - Arctic National Wildlife Refuge, Alaska

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Polar Bear - Arctic National Wildlife Refuge, Alaska

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Polar Bear family in fog - Arctic National Wildlife Refuge, Alaska

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Red Fox leaping across stream - Northern Alaska

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Aurora, moon, and frozen pond - Northern Alaska

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Aurora, moon, and frozen pond - Northern Alaska

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Milky Way over Car - Chiricahua National Monument, Arizona

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Crested Caracara - Kissimmee Prairie Preserve State Park, Florida

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Bison lying in dry grass - Paynes Prairie State Park, Florida

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Snowy Egret chasing fish - Kissimmee Prairie Preserve State Park, Florida

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Aurora over Chandalar Shelf - Brooks Range, Alaska

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Aurora reflected by frozen Dietrich River - Brooks Range, Alaska

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Aurora over Chandalar Shelf - Brooks Range, Alaska

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Aurora over Alaska Pipeline - Brooks Range, Alaska

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Aurora over spruce trees - Brooks Range, Alaska

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Aurora reflected by frozen Dietrich River - Brooks Range, Alaska

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Aurora over Snowden Mountain - Brooks Range, Alaska

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Aurora over Dalton Highway - Brooks Range, Alaska

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Snowy Egret - Paynes Prairie Preserve State Park, Florida

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Barn Owl in window - Fort Collins, Colorado

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Harris's Hawk - Boulder, Colorado

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Great Horned Owl - Fort Collins, Colorado

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Barred Owl - Boulder, Colorado

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Gyrfalcon flying over lake - Boulder, Colorado

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Golden Eagle - Boulder, Colorado

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Barn Owl - Boulder, Colorado

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Red-tailed Hawk - Boulder, Colorado

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Screech Owl - Boulder, Colorado

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Red-tailed Hawk - Boulder, Colorado

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Barn Owl in window - Fort Collins, Colorado

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Red-tailed Hawk - Boulder, Colorado

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Long-eared Owl - Fort Collins, Colorado

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Harris's Hawk - Boulder, Colorado

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Smoky sunset - Red Rock Lakes National Wildlife Refuge, Montana

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Elk with large antlers - Yellowstone National Park, Wyoming

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Florida Softshell Turtle digging egg nest - Paynes Prairie State Park, Florida

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Tree fern forest - Roaring Billy Falls Trail, New Zealand

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Tussock grass - Arrowtown, New Zealand

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Southern Alps glacier - Aoraki-Mount Cook National Park, New Zealand

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Glacier as seen from air - Aoraki-Mount Cook National Park, New Zealand

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Hiker near Mount Cook - Lake Tekapo, New Zealand

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Southern Alps and Lake Tekapo - New Zealand

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Mount Sealy and sheep - Southern Alps, New Zealand

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Mount Taranaki at sunrise - Rahotu, New Zealand

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Snowy Owl flying over snow - Stayner, Ontario, Canada

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Hokitika Gorge - New Zealand

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Dying supercell storm - Strasburg, North Dakota

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Aurora - Nutirwik Creek, Brooks Range, Alaska

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Coastal Brown Bear yawning and stretching - Lake Clark National Park, Alaska

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Dust storm and barn - Dickens, Texas

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Tornado - near Millsap, Texas

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Flowering Dogwood - Great Smoky Mountains National Park

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Mingo Falls - Great Smoky Mountains National Park

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Snow mounds - Jasper National Park, Canada

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Great Egret - Ichetucknee Springs State Park, Florida

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Lightning and wheat field - Elmer, Oklahoma

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Prairie Storm - near Limon, Colorado

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Moon and Belt of Venus over Nugent Mountain - Big Bend National Park, Texas

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Aurora over cabin - Brooks Range, Alaska

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Aurora - Nutirwik Creek, Brooks Range, Alaska

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Double-crested Cormorant preening its feathers - Everglades National Park, Florida

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Enormous paper wasp nest - Everglades National Park, Florida

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Alligator in Myakka River - Myakka River State Park, Florida

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Juvenile Bald Eagle - Chilkat River, Alaska

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Flying Bald Eagle - Chilkat River, Alaska

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Snow-covered forest and mountains - Alaska Chilkat Bald Eagle Preserve, Haines, Alaska

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Bald Eagle eating salmon - Chilkat River, Alaska

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Bald Eagle eating salmon - Chilkat River, Alaska

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Soaring Bald Eagle - Chilkat River, Alaska

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Tent, stars, and Nugent Mountain - Big Bend National Park, Texas

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Vulture in tree - Everglades National Park, Florida

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Lightning at sunset - Everglades National Park, Florida

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Alligator on La Chua Trail - Paynes Prairie State Park, Florida

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Shelf cloud over farmhouse - near Memphis, Missouri

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Shelf cloud over grain bins - near Canton, Missouri

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Landspout tornado - Willcox, Arizona

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Alligator on Lake Wauberg - Paynes Prairie Preserve State Park, Florida

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Rain shower over Florida Strait - Tavernier, Florida

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Storm with overshooting top - Mineral Wells, Texas

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Coastal brown bears after mating - Lake Clark National Park, Alaska

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Dust devil - Minneola, Kansas

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Monsoon clouds over Gunlom Road - Kakadu National Park, Northern Territory, Australia

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Pied-billed Grebe - Mrazek Pond, Everglades National Park, Florida

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Ice climber on Weeping Wall - Banff National Park, Canada

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Steam devils - Gainesville, Florida

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Water moccasin eating rat - Paynes Prairie Preserve State Park, Florida

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Roll cloud - Atwood, Kansas

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Crepuscular rays in forest - Paynes Prairie Preserve State Park, Florida

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Shelf cloud - Gainesville, Florida

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Supercell storm - Piedmont, South Dakota

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Lightning over the Dos Cabezas Mountains - Willcox, Arizona

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St. Johns River Road - Lake George State Forest, Florida

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Northern Crested Caracara - Kissimmee Prairie Preserve State Park, Florida

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Roseate Spoonbill - Huntington Beach State Park, South Carolina

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Mesocyclone of a supercell storm - Cheyenne, Wyoming

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Truck caught in flash flood - Coyanosa, Texas

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Hail drifts on road - Pecos, Texas

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Dust storm - Bloomfield, Iowa

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Storm over farm - Bloomfield, Iowa

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Ragged gust front with fractus cloud fingers - Shreveport, Louisiana

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Ragged shelf cloud - Maryville, Missouri

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Dying supercell storm - Strasburg, North Dakota

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Underside of thunderstorm anvil - Cheyenne, Wyoming

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Lightning barrage - Guthrie, Texas

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Tornado - Canadian, Texas

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Squall line and whale's mouth cloud - Leedey, Oklahoma

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Thunderstorm reflected by wet road - Broadwater, Nebraska

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Lightning-lit supercell and stars - Oakley, Kansas

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Tornado - Cheyenne Wells, Colorado

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Tornado and cows - north of Lamar, Colorado

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Tornado and double rainbow - north of Lamar, Colorado

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Mountain range at sunset - Southeast Alaska

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Tidal plain drainage channels - Cook Inlet, Alaska

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Mountain and storm clouds - Lake Clark National Park, Alaska

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Coastal brown bear drinking water - Lake Clark National Park, Alaska

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Coastal brown bears - Lake Clark National Park, Alaska

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Coastal brown bear in sunny meadow - Lake Clark National Park, Alaska

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Coastal brown bear shaking water off fur - Lake Clark National Park, Alaska

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Coastal brown bear jumping across stream - Lake Clark National Park, Alaska

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Coastal brown bear in morning light - Lake Clark National Park, Alaska

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Coastal brown bear and cub standing - Lake Clark National Park, Alaska

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Coastal brown bear nursing cubs - Lake Clark National Park, Alaska

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Running coastal brown bear cub - Lake Clark National Park, Alaska

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Muddy coastal brown bear - Lake Clark National Park, Alaska

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Coastal brown bear on beach - Lake Clark National Park, Alaska

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Truck and snow-covered trees - Dalton Highway, Alaska

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Truck on ice-covered Dalton Highway - Brooks Range, Alaska

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Denali - Alaska

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Aurora over Alaskan Pipeline - Brooks Range, Alaska

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Aurora over camp - Brooks Range, Alaska

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Aurora over trees - Brooks Range, Alaska

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Truck under aurora - Atigun Pass, Brooks Range, Alaska

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Aurora - Atigun Pass, Brooks Range, Alaska

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Aurora - Brooks Range, Alaska

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Aurora - Mount Sukakpak, Alaska

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Aurora - Mount Sukakpak, Alaska

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Aurora - Brooks Range, Alaska

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Aurora - Brooks Range, Alaska

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Aurora - Brooks Range, Alaska

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Aurora corona - Brooks Range, Alaska

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Aurora corona - Brooks Range, Alaska

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Aurora - Brooks Range, Alaska

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Hole punch cloud - Gainesville, Florida

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Sunrise at Glory Hole - Jasper National Park, Canada

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Dust storm - near Dickens, TX

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Grand Prismatic Spring - Yellowstone National Park, Wyoming

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Dust storm - Spur, Texas

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Tornado - near Rozel, Kansas

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Lightning over Panther Peak - Saguaro National Park, Arizona

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Coastal Brown Bear in a watery environment - Lake Clark National Park, Alaska

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Clamming Coastal Brown Bears - Lake Clark National Park, Alaska

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Thermophile bacterial biomats - Mammoth Hot Springs, Yellowstone National Park, Wyoming

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Smoke from Violet Town bushfire - Victoria, Australia

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Pyrocumulus Cloud - Kissimmee Prairie State Park, Florida

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Lightning over the Gila Mountains - Safford, Arizona

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Monsoon rainbow - Yavapai County, Arizona

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Barred Owl Roost camping platform - Roanoke River, North Carolina

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Moon and Venus over the Chatham River - Everglades National Park, Florida

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Pavilion Key Sunset - Everglades National Park, Florida

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American White Pelicans - Indian Key, Everglades National Park, Florida

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Sun Pillar - Stayner, Ontario, Canada

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Blizzard on farm road with person - Stayner, Ontario, Canada

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Blizzard on farm road - Stayner, Ontario, Canada

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Blizzard on farm road - Stayner, Ontario, Canada

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Snowy Owl landing on fence post - Stayner, Ontario, Canada

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Snowy Owl landing on fence post - Stayner, Ontario, Canada

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Snowy Owl on fence post - Stayner, Ontario, Canada

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Snowy Owl against pale sun - Stayner, Ontario, Canada

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Snowy Owl - Stayner, Ontario, Canada

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Snowy Owl - Stayner, Ontario, Canada

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Snowy owl in flight - Stayner, Ontario, Canada

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Snowy owl in flight - Stayner, Ontario, Canada

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Lightning and green storm clouds - near Olustee, Oklahoma

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Severe hail storm - near Aurora, Colorado

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Sonoran Desert Monsoon lightning - Ajo, Arizona

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Storm chaser photographing approaching hail storm - Sheffield, Texas

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Rapid on Laurel Creek - Great Smoky Mountains National Park, Tennessee

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Black-tailed Prairie Dogs - Wichita Mountains Wildlife Refuge, Oklahoma

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Western Lowland Gorilla - Franklin Park Zoo, Boston, Massachusetts

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Double-crested Cormorants in tree - Lower Suwannee National Wildlife Refuge, Florida

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Wind-blurred meadow grass - Strawberry Mountain Wilderness, Oregon

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Dramatic thunderstorm - Del Rio, Texas

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Storm chasers photographing lightning - San Angelo, Texas

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Lightning bolt - Sheffield, Texas

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Lightning and farm road - Paxton, Nebraska

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Bear and human tracks in mud - Lake Clark National Park, Alaska

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Storm chaser photographing storm - Rapid City, South Dakota

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Thunderstorm over cypress dome - Everglades National Park, Florida

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Lightning and dramatic storm clouds - Badlands National Park, South Dakota

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Smoldering log after bushfire - Kakadu National Park, Northern Territory, Australia

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Arnhem Land Escarpment - Kakadu National Park, Northern Territory, Australia

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Black-necked Stork - Yellow Water Wetlands, Kakadu National Park, Northern Territory, Australia

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Needle-shaped tornado - near Howes, South Dakota

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Tornado - north of Roscoe, South Dakota

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Tornado - north of Roscoe, South Dakota

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Tornado - north of Roscoe, South Dakota

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Tornado - north of Roscoe, South Dakota

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Tornado - north of Roscoe, South Dakota

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Tornado - north of Roscoe, South Dakota

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Tornado - near Roscoe, South Dakota

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Lightning and tree - Williston, Florida

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Common Bronzewing - Bairnsdale, Victoria, Australia

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Sailing stone by moonlight - The Racetrack, Death Valley National Park, California

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Close encounter with funnel cloud - near Collyer, Kansas

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Funnel cloud - near Collyer, Kansas

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Gull exhibiting drop-catch behavior - Lauderdale-by-the-Sea, Florida

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Gull exhibiting drop-catch behavior - Lauderdale-by-the-Sea, Florida

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Gull exhibiting drop-catch behavior - Lauderdale-by-the-Sea, Florida

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Aerial view of Gunnison Island - Great Salt Lake, Utah

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Cape Otway surf - Victoria, Australia

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Grey's Crested Guenon grooming - Cincinnati Zoo and Botanical Garden, Ohio

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Live Oak covered with epiphytes - Cumberland Island, Georgia

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American Alligator - Gainesville, Florida

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American Alligator - Gainesville, Florida

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Deadman's Key on a hazy summer afternoon - Cedar Key, Florida

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Reflection of rock in pool - Uluru, Australia

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Monsoon lighting at sunset - Cochise, Arizona

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Monsoon lightning - Willcox, Arizona

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Monsoon lightning - Willcox, Arizona

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Lightning over the Dos Cabezas Mountains - Willcox, Arizona

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Black-tailed Rattlesnake - Tubac, Arizona

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Bison at sunset - Badlands National Park, South Dakota

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Coastal Brown Bear and its reflection - Lake Clark National Park, Alaska

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Bear cub playing with its mother - Lake Clark National Park, Alaska

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Bear cub playing with its mother - Lake Clark National Park, Alaska

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Bear cub playing with its mother - Lake Clark National Park, Alaska

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Prius under whale's mouth cloud - Springfield, Colorado

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Lightning over Woodrow Baptist Church - Woodrow, Texas

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Dramatic forked lightning - Woodrow, Texas

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Wall cloud over old farmhouse - east of Plainview, Texas

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Lightning reflected by the Fort Lyon Canal - Lamar, Colorado

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Moon, stars, storm clouds, and lightning - Nebraska Sandhills north of Arthur, Nebraska

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Violent squall line - York, Nebraska

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Violent squall line - York, Nebraska

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Farm house and approaching storm - Clarks, Nebraska

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Approaching squall line - Clarks, Nebraska

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Approaching squall line - near Clarks, Nebraska

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Rain curtains over Highway 56 - Satanta, Kansas

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Prius and storm - near Ulysses, Kansas

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Sunflowers under approaching storm - Alice, Texas

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Lightning and hail storm - Alice, Texas

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Truck passing thunderstorm - Carlsbad, New Mexico

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Severe hail storm - near Aurora, Colorado

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Lightning and setting sun - Bridgeport, Nebraska

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Lightning and farm road - Paxton, Nebraska

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Storm over farm - Paxton, Nebraska

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Mothership storm cloud - Paxton, Nebraska

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Round barn and squall line - Biggsville, Illinois

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Barn and squall line - Biggsville, Illinois

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Cemetery and stormy sky - Milford, Nebraska

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Wave crashing against seawall - Barwon Heads, Victoria, Australia

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Bison feeding in snow - Yellowstone National Park, Wyoming

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Coyote beside Madison River - Yellowstone National Park, Wyoming

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Old Faithful Geyser erupting - Yellowstone National Park, Wyoming

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Giantess Geyser erupting - Yellowstone National Park, Wyoming

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Trumpeter Swan on Yellowstone River during snowstorm - Yellowstone National Park, Wyoming

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Snowmobiles emerging from heavy snow - Hayden Valley, Yellowstone National Park, Wyoming

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Snow coach in Hayden Valley - Yellowstone National Park, Wyoming

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Herd of Pronghorn on ridge - Yellowstone National Park, Wyoming

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Coyote and Pronghorn - Yellowstone National Park, Wyoming

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Male Bighorn Sheep on cliff - Yellowstone National Park, Wyoming

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Bison in meadow during snowstorm - Yellowstone National Park, Wyoming

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Bison grazing at sunset - Yellowstone National Park, Wyoming

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Forlorn bison feeding in snow - Yellowstone National Park, Wyoming

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Herd of bison on road - Yellowstone National Park, Wyoming

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Headshot of bison in winter - Yellowstone National Park, Wyoming

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Lone bison feeding in snow-covered Lamar Valley - Yellowstone National Park, Wyoming

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Spectacular lightning over the Halifax River - New Smyrna Beach, Florida

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Man and dog in boat at dusk - Horicon Marsh, Wisconsin

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Coastal Brown Bear eating a salmon - Lake Clark National Park, Alaska

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Coastal Brown Bear eating a salmon - Lake Clark National Park, Alaska

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Bald Eagle at sunrise - Cook Inlet, Lake Clark National Park, Alaska

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Coastal Brown Bear watching seagull at sunrise - Cook Inlet, Lake Clark National Park, Alaska

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Coastal Brown Bear in meadow - Lake Clark National Park, Alaska

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Coastal Brown Bear - Lake Clark National Park, Alaska

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Horned Puffin carrying fish - Redoubt Volcano, Alaska

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Horned Puffin on rock - Duck Island, Cook Inlet, Alaska

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Coastal Brown Bear at sunrise - Cook Inlet, Lake Clark National Park, Alaska

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Photographing the sunrise - Lake Clark National Park, Alaska

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Coastal Brown Bear at sunrise - Cook Inlet, Lake Clark National Park, Alaska

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Coastal Brown Bear - Lake Clark National Park, Alaska

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Coastal Brown Bear - Lake Clark National Park, Alaska

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Woman canoeing on Green River - Labyrinth Canyon, Utah

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Windmill in dust storm - Grady, New Mexico

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Wedge tornado - Bennington, Kansas

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Tornado - near Rozel, Kansas

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Tornado - near Rozel, Kansas

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Tornado - near Rozel, Kansas

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Backlit tornado - near Rozel, Kansas

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Tornado - near Millsap, Texas

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Tornado - near Millsap, Texas

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Tornado - near Millsap, Texas

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Tornado - near Millsap, Texas

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Hail streaks and rainbow - Del Rio, Texas

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Dramatic thunderstorm updraft - Aspermont, Texas

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Power pylons in front of dark storm - Dickens, Texas

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Male Painted Bunting - Eco Pond, Everglades National Park, Florida

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Man looking into Kilauea Volcano - Hawaii Volcanoes National Park

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People looking into Kilauea Volcano - Hawaii Volcanoes National Park

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The Milky Way, Southern Cross, and Coalsack Nebula - Arno Bay, South Australia

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Crow drinking - Everglades National Park, Florida

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Swimming Anhinga - Everglades National Park, Florida

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Thunderstorm lit by setting sun - Myakka River State Park, Florida

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Couple on bicycles - Myakka River State Park, Florida

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Stars over tent - Needles District, Canyonlands National Park, Utah

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Tent under starry sky - Ozark National Scenic Riverways, Missouri

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The Firefly Whisperer - Missouri Ozarks

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Chaotic copper-colored sky - Alva, Oklahoma

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Lightning and truck - Tucumcari, New Mexico

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Lightning and trucks - Tucumcari, New Mexico

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Farmer staring at setting sun - Melrose, New Mexico

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Rain shaft backlit by setting sun - Clinton, Oklahoma

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Pickup truck under mammatus clouds - near Woodward, Oklahoma

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Lightning striking wheat field - rural western Oklahoma

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Lightning striking wheat field - rural western Oklahoma

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Tarantula on boulder - Big Bend National Park, Texas

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Tarantula on road - Big Bend National Park, Texas

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Distant hills at sunset - Big Bend National Park, Texas

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Jackrabbit with backlit ears - Big Bend National Park, Texas

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Round Spring - Ozark National Scenic Riverways, Missouri

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Alley Mill at night - Ozark National Scenic Riverways, Missouri

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Coyote - Jasper National Park, Alberta, Canada

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Howling Coyote - Jasper National Park, Alberta, Canada

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Coyote - Jasper National Park, Alberta, Canada

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Rocky Mountain vista in snowstorm - Banff National Park, Canada

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Pale sun and cliffs - Banff National Park, Canada

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Massive trees of the Hoh Rain Forest - Olympic National Park, Washington

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Car dwarfed by huge trees - Olympic National Park, Washington

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Osprey bringing a fish to its mate - Everglades National Park, Florida

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Tricolored Heron - Mrazek Pond, Everglades National Park, Florida

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American Coot in Mrazek Pond - Everglades National Park, Florida

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White Ibis at sunset - Paurotis Pond, Everglades National Park, Florida

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Rainbow in irrigator spray - Homestead, Florida

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Black Skimmer fishing before sunrise - Eco Pond, Everglades National Park, Florida

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Rainbow in irrigator spray - Homestead, Florida

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Wood Stork at sunset - Eco Pond, Everglades National Park, Florida

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Sunset-lit clouds and silhouetted bird - Myakka River State Park, Florida

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Sunset-lit storm clouds and Great Egret flying - Myakka River State Park, Florida

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Sunset-lit storm clouds and Tricolored Heron fishing - Myakka River State Park, Florida

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Eastern Diamondback Rattlesnake - Everglades National Park, Florida

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Eastern Diamondback Rattlesnake - Everglades National Park, Florida

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Eastern Diamondback Rattlesnake - Everglades National Park, Florida

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Lightning and park road - Everglades National Park, Florida

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Lightning over Florida Bay - Everglades National Park, Florida

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Crows and storm clouds - Everglades National Park, Florida

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Lightning over Nine Mile Pond - Everglades National Park, Florida

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Lightning over Nine Mile Pond - Everglades National Park, Florida

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Moonrise and alpenglow clouds over the Gila Wilderness - New Mexico

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Dramatic lightning - Badlands National Park, South Dakota

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Picturesque lightning - Badlands National Park, South Dakota

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Picturesque lightning - Badlands National Park, South Dakota

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Whale's mouth cloud - Badlands National Park, South Dakota

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Squall line - Badlands National Park, South Dakota

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Bighorn Sheep silhouetted at dusk - Badlands National Park, South Dakota

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Bighorn Sheep on grass-covered hill - Badlands National Park, South Dakota

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Well-camouflaged Bighorn Sheep lamb - Badlands National Park, South Dakota

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Bighorn Sheep - Badlands National Park, South Dakota

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Bighorn Sheep surveying its domain - Badlands National Park, South Dakota

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Tornado in west Oklahoma oilfield - Fairview, Oklahoma

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Distant storm - Norman, Oklahoma

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Cascades on Indian Creek - Great Smoky Mountains National Park, North Carolina

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Cascade on Indian Creek - Great Smoky Mountains National Park, North Carolina

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Jeep in Cades Cove - Great Smoky Mountains National Park, Tennessee

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Laurel Creek - Great Smoky Mountains National Park, Tennessee

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Couple reading by lantern light - Great Smoky Mountains National Park, Tennessee

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Bicyclist on Gainesville-Hawthorne State Trail - Paynes Prairie Preserve State Park, Florida

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Cabbage Palm reflected in pond - Lower Suwannee National Wildlife Refuge, Florida

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Dog on path - Bairnsdale, Victoria, Australia

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Monsoon-fed waterfall - Kakadu National Park, Northern Territory, Australia

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Monsoon storms - Kakadu National Park, Northern Territory, Australia

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Australian Darter taking flight - Yellow Water Wetlands, Kakadu National Park, Northern Territory, Australia

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Flowering Lotus - Yellow Water Wetlands, Kakadu National Park, Northern Territory, Australia

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Yellow Water Wetlands - Kakadu National Park, Northern Territory, Australia

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Comb-crested Jacana - Yellow Water Wetlands, Kakadu National Park, Northern Territory, Australia

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Australian Darter with fish - Yellow Water Wetlands, Kakadu National Park, Northern Territory, Australia

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Monsoonal storm clouds over Gulf of Carpentaria coast - Northern Territory, Australia

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Autumn leaves reflected by rippling pond - Francis Beidler Forest, South Carolina

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Eagle Lake trees in fog - Acadia National Park, Maine

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Dawn at Hodgdon Pond - Acadia National Park, Maine

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Dawn at Hodgdon Pond - Acadia National Park, Maine

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Greater Flamingo - Disney Animal Kingdom Lodge, Florida

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Rainbow and lone tree - Gainesville, Florida

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Sunrise - Buffalo River, Arkansas

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Fern falls and canoe - Buffalo River, Arkansas

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Lightning - near Gainesville, Florida

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Lightning - near Gainesville, Florida

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Lightning - near Gainesville, Florida

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Lightning - near Gainesville, Florida

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Tornado passing behind farmhouse - rural South Dakota

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Cone tornado and sunlit field - Faith, South Dakota

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Storm chasers photograph tornado passing behind church - near Howes, South Dakota

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Storm chasers photograph tornado passing behind church - near Howes, South Dakota

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Cone Tornado and rear flank downdraft - Howes, South Dakota

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Tornado - near Roscoe, South Dakota

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Hail on the way - Stinnett, Texas

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Mesocyclone and Lightning - Dumas, Texas

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Black-tailed Prairie Dogs - Wichita Mountains Wildlife Refuge, Oklahoma

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Black-tailed Prairie Dogs - Wichita Mountains Wildlife Refuge, Oklahoma

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Black-tailed Prairie Dog - Wichita Mountains Wildlife Refuge, Oklahoma

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Black-tailed Prairie Dogs - Wichita Mountains Wildlife Refuge, Oklahoma

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Black-tailed Prairie Dogs - Wichita Mountains Wildlife Refuge, Oklahoma

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Black-tailed Prairie Dogs - Wichita Mountains Wildlife Refuge, Oklahoma

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Western Kingbird eating grasshopper - Comanche National Grasslands, Colorado

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The Creature - Comanche National Grasslands, Colorado

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Orchid - Atlanta Botanical Garden, Atlanta, Georgia

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Georgia Aquarium - Atlanta, Georgia

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Yellow Rat Snake - San Felasco Hammock Preserve State Park, Florida

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Boat-tailed Grackle in Willow Tree - Paynes Prairie Preserve State Park, Florida

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Anhinga grooming - Paynes Prairie Preserve State Park, Florida

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Bromeliad and log - Marie Selby Botanical Gardens, Sarasota, Florida

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Mandrill - Franklin Park Zoo, Boston, Massachusetts

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Wattled Crane eye - Franklin Park Zoo, Boston, Massachusetts

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Japanese Sea Nettle - New England Aquarium, Boston, Massachusetts

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Red-tailed Hawk feeding on pigeon - Boston, Massachusetts

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Lightning striking the Gulf of Mexico - Sanibel Island, Florida

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Snowy Egret - J.N. Ding Darling National Wildlife Refuge, Florida

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Lightning and stars over the Gulf of Mexico - Captiva, Florida

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Milky Way and Sagittarius - Upper Missouri River Breaks National Monument, Montana

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Meadow and tent at sunset - Upper Missouri River Breaks National Monument, Montana

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Rainbow - Upper Missouri River Breaks National Monument, Montana

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Lightning - Albuquerque, New Mexico

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Pastel clouds - Orange Lake, Florida

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Rainbow, lightning, and anticrepuscular rays - Fort Stockton, Texas

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Desert rainbow - near Marathon, Texas

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Mammatus and trees - Fort Worth, Texas

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Mammatus clouds and airplane - Arlington, Texas

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Severe thunderstorm - Fort Worth, Texas

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Great Egret - Malheur National Wildlife Refuge, Oregon

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Canadian Geese - near Steens Mountain, Oregon

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Tree Swallow in flight - Malheur National Wildlife Refuge, Oregon

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Rough-legged Hawk - Hines, Oregon

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Wild Turkeys on road - Kissimmee Prairie Preserve State Park, Florida

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American Alligator during the dry season - Kissimmee Prairie Preserve State Park, Florida

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White-tailed Deer - Kissimmee Prairie Preserve State Park, Florida

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Yellow-throated Miner - Arno Bay, Australia

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The constellation Orion over a tent - Death Valley National Park, California

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Eureka Dunes - Death Valley National Park, California

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Moonrise over cliff - Death Valley National Park, California

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Eureka Dunes - Death Valley National Park, California

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Female Elk at sunset - Humboldt Lagoons State Park, California

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Red Panda - National Zoo, Washington, DC

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Otters playing - National Zoo, Washington, DC

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Sloth Bears playing - National Zoo, Washington, DC

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Cheetah napping in grass - National Zoo, Washington, DC

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Lion exhibiting a flehmen response - National Zoo, Washington, DC

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Osprey with fish - Bald Point State Park, Florida

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Great Horned Owl - Gainesville, Florida

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Southern Fence Lizard - O'Leno State Park, Florida

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Florida Box Turtle - Paynes Prairie Preserve State Park, Florida

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Water drops on American Lotus leaf - Lake Lochloosa, Florida

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Golden Silk Spider - Gainesville, Florida

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Cedar Creek - Congaree National Park, South Carolina

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Funnel cloud - near La Crosse, Kansas

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Wall cloud - near La Crosse, Kansas

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Ragged wall cloud - near Collyer, Kansas

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Sabal Palm sunset - Kissimmee Prairie Preserve State Park, Florida

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Gull exhibiting drop-catch behavior - Lauderdale-by-the-Sea, Florida

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American Herring Gull - Anastasia State Park, Florida

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Gull exhibiting drop-catch behavior - Lauderdale-by-the-Sea, Florida

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Gulls exhibiting drop-catch behavior - Lauderdale-by-the-Sea, Florida

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Backlit grass stems - Allen David Broussard Catfish Creek State Preserve, Florida

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Feral Green Iguana - Hugh Taylor Birch State Park, Florida

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Girl on beach at sunset - Captiva Island, Florida

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Rhesus Macaque grooming infant - Silver Springs River, Florida

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Jambu Fruit Dove - Cincinnati Zoo and Botanical Garden, Ohio

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Rock formation on Upheaval Dome Trail - Canyonlands National Park, Utah

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View over Stillwater Canyon and the Green River - Canyonlands National Park, Utah

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Turks Head mesa and the Green River - Canyonlands National Park, Utah

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Thunderstorm - Dead Horse Point, Utah

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Rocky Mountain ridgelines at dawn - Idaho-Montana border

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Brown Bear - Woodland Park Zoo, Seattle, Washington

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Bobcat - Gainesville, Florida

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Bobcat - Gainesville, Florida

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Bobcat - Gainesville, Florida

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Gum trees at dusk - Bairnsdale, Victoria, Australia

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Steller's Sea Eagle - Cincinnati Zoo and Botanical Garden, Ohio

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Camas Creek - Ukiah-Dale Forest State Scenic Corridor, Oregon

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Latourell Falls - Columbia River Gorge, Oregon

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Cypress swamp along River Styx - Alachua County, Florida