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Male Willow Ptarmigan with changing plumage perches on a Pussy Willow in Denali National Park, Interior Alaska, Spring
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An Adult male Willow Ptarmigan in breeding plumage takes dust bath on a Savage River gravel bar, Denali National Park and Preserve, Interior Alaska, Spring
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Close up profile of a male Willow Ptarmigan in breeding plumage with prominent eye combs, Denali National Park and Preserve, Interior Alaska, Spring
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Male Willow Ptarmigan in breeding plumage stands on snow near Savage River, Denali National Park and Preserve, Interior Alaska, Spring
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Male Willow Ptarmigan in breeding plumage hides in brush along the Savage River, Denali National Park, Interior Alaska, Spring
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Male Willow Ptarmigan in breeding plumage stands in brush near Savage River, Denali Park National Park and Preserve, Interior Alaska, Spring
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Adult male Willow Ptarmigan in white winter plumage walks on the frozen Savage River in Denali National Park and Preserve, Interior Alaska, Spring
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Male Rock Ptarmigan in late breeding plumage stands on a rocky ridge near Eielson Visitor Center in Denali National Park and Preserve, Interior Alaska, Spring
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Male Rock Ptarmigan in late breeding plumage stands on a rocky ridge near Eielson Visitor Center in Denali National Park and Preserve, Interior Alaska, Spring
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Male Wilson's Warbler sings while sitting on a willow shrub near Savage River in Denali National Park anbd Preserve, Interior Alaska, Spring
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Male Wilson's Warbler sings while sitting on a willow shrub near Savage River in Denali National Park anbd Preserve, Interior Alaska, Spring
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Close up of a male Willow Ptarmigan with changing plumage walking across the snow near Savage River, Denali National Park, Interior Alaska, Spring
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Black-billed Magpie perches on willow shrub with new Spring growth near Sable Pass in Denali National Park and Preserve, Interior Alaska, Spring
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Male Wilson's Warbler perches on willow shrub near Savage River in Denali National Park and Preserve, Interior Alaska, Spring
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Adult male Willow Ptarmigan in white winter plumage vocalizes with open beak near Savage River in Denali National Park and Preserve, Interior Alaska, Spring
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Adult male Willow Ptarmigan in white winter plumage, Denali National Park and Preserve, Interior Alaska, Winter
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Adult male Willow Ptarmigan in white winter plumage, Denali National Park and Preserve, Interior Alaska, Winter
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Adult male Willow Ptarmigan in white winter plumage, Denali National Park and Preserve, Interior Alaska, Winter
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Adult male Willow Ptarmigan in white winter plumage, Denali National Park and Preserve, Interior Alaska, Winter
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Northern Hawk Owl cocks its head quizzically while perched in a poplar tree near Wonder Lake in Denali National Park and Preserve, Interior Alaska, Fall
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Orange-crowned Warbler perches on a willow shrub near Savage River in Denali National Park and Preserve, Interior Alaska, Spring
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Willow Ptarmigan perches on a willow branch with Mt. McKinley in the background, Denali National Park, Interior Alaska, Autumn
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A Willow Ptarmigan shows the early signs of winter plumage near the Sanctuary River in Denali National Park and Preserve, Interior Alaska, Fall
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Close up of an Snowshoe Hare sitting and alert, Denali National Park and Preserve, Interior Alaska, Spring
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White-tailed Ptarmigan stands on an alpine rock pile on Cathedral Mountain in Denali National Park and Preserve, Interior Alaska, Summer
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Willow Ptarmigan, with changing plumage, stand amongs underbrush at Finger Mountain along the Dalton Highway, Interior Alaska, Autumn
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Close up view of a male Redpoll in spring breeding colors, Anchorage, Southcentral Alaska
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Male Harlequin Duck sits on gravel bar next to Savage River in Denali National Park and Preserve, Interior Alaska, Spring
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A Black Capped Chickadee sits on a spruce branch in Hillside Anchorage, Southcentral Alaska, Spring
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A Bald Eagle perched in the top of a hemlock tree in Alaska's Inside Passage with the Tongass National Forest and snowy peaks of the Chilkat Mountains in the background, Southeast Alaska, Winter, COMPOSITE
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A Bald Eagle perched in the top of a hemlock tree in Alaska's Inside Passage with the Tongass National Forest and snowy peaks of the Chilkat Mountains in the background, Southeast Alaska, Winter, COMPOSITE
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Close up view of a Willow Ptarmigan flapping its wings in Denali National Park and Preserve, Interior Alaska, Summer
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Willow Ptarmigan burrows into snow to feed on berries, Mt. Baldy near Talkeetna, Southcentral Alaska, Winter
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Arctic Ground Squirrel stands on a branch of a snag Spruce tree in Denali National Park and Preserve, Interior Alaska, Spring
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Close up of a male Hairy Woodpecker perched on a lichen covered snag, Chugach Mountains, Southcentral Alaska, Winter
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A Bohemian Waxwing feasts on Mountain Ash berries in downtown Anchorage, Southcentral Alaska, Winter/n
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Bald Eagle perched in the top of a Hemlock tree overlooking the islands of the Inside Passage and Tongass National Forest during a misty sunset in Southeast Alaska, Winter, COMPOSITE
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A pair of bull caribou wander the open landscape near Savage River in Denali National Park and Preserve, Interior Alaska, Summer
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Close up view of Willow Ptarmigan during a summer snow storm in Denali National Park and Preserve, Interior Alaska
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An adult bull moose walks amongst the Autumn colored brush in Denali National Park and Preserve while cars and campers take pictures from the Park Road, Interior Alaska, Fall
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Bald Eagle perches on deadwood on the Homer Spit, Homer, Kenai Peninsula, Southcentral Alaska, Spring
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An adult male Grizzly Bear surveys terrain while standing on hind feet in Sable Pass, Denali National Park and Preserve, Interior Alaska, Spring
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Grizzly Bear sow with two juvenile cubs flee from approaching male Grizzly Bear in Sable Pass, Denali National Park, Interior Alaska, Spring
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Two adult Bull Moose spar in a meadow near Wonder Lake in Denali National Park and Preserve, Interior Alaska, Autumn
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Two adult Bull Moose spar in a meadow near Wonder Lake in Denali National Park and Preserve, Interior Alaska, Autumn
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Willow Ptarmigan in white winter plumage sitting behind bare branches on snowpack, Chugach Mountains, Southcentral Alaska, Winter
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Portrait of a Northern Hawk Owl perched on a dead spruce tree, Denali National Park, Interior Alaska, Fall
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A group of Western Sandpipers rest and seek warmth amongst a stiff wind along Kachemak Bay during their Spring migration, Kenai Peninisula, Southcentral Alaska, Spring
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A group of Western Sandpipers take flight from the mud flats of Kachemak Bay during their Spring migration, Kenai Peninsula, Southcentral Alaska, Spring
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A Dunlin shorebird walks among the soft mud of Kachemak Bay in search of food during Spring migration, Kenai Peninsula, Southcentral Alaska, Spring
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A Dall ram stands on ridge in Denali National Park and Preserve, Interior Alaska, Spring
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Close up of a ram Dall Sheep laying on a hillside in Denali National Park and Preserve, Interior Alaska, Spring
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Band of ram Dall Sheep rest on a ridge with Alaska Range in the background, Denali National Park and Preserve, Interior Alaska, Spring
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A band of caribou cross the snow covered flats of the Savage River, Denali National Park and Preserve, Interior Alaska, Spring
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Band of caribou cross a shallow tributary of Savage River, Denali National Park, Interior Alaska, Spring
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Adult Bull Moose crosses the Park Road in front of a Camp Denali tour bus near Wonder Lake in Denali National Park and Preserve, Interior Alaska, Summer
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Two Great Horned Owl chicks nest in a spruce tree near Sanctuary River Campground, Denali National Park and Preserve, Interior Alaska, Spring
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Bull caribou browses amidst the Autumn tundra on the north side of Wonder Lake in Denali National Park & Preserve, Interior Alaska, Fall
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Male Willow Ptarmigan in winter plumage standing on hard packed snow with red crest visible, Chugach Mountains, Southcentral Alaska, Winter
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Male Willow Ptarmigan in winter plumage in flight over snow covered willows with red crest visible, Chugach Mountains, Southcentral Alaska, Winter
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An Arctic tern stands on a rock at Potter Marsh in the Anchorage Coastal Wildlife Refuge, near Anchorage, Southcentral Alaska, Summer/n
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A Bald Eagle perched in the top of a hemlock tree in Alaska's Inside Passage with the Tongass National Forest and snowy peaks of the Chilkat Mountains in the background, Southeast Alaska, Winter
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A Bald Eagle perched in the top of a hemlock tree in Alaska's Inside Passage with the Tongass National Forest and snowy peaks of the Chilkat Mountains in the background, Southeast Alaska, Winter
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A pair of mated Bald Eagles perch in the morning sun in Alaska's Inside Passage, Southeast Alaska, Winter
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Bald Eagle perched on Spruce branch overlooking the Chilkat Mountains and fog filled Tongass National Forest, Southeast Alaska, Winter, COMPOSITE
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Birdwatchers photograph shorebird flocks in Hartney Bay near Cordova during the Shorebird Festival, Copper River Delta,Southcentral Alaska, Spring
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Black Turnstone perched on a rock on Montague Island shoreline, Prince William Sound, Southcentral Alaska, Spring
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Seagulls flying over the Copper River in search of Eulachon in the early spring during break-up, Chugach Mountains, Copper River Delta, Southcentral Alaska, Spring
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A Merlin (Pigeon Hawk) perches on a pine cone decorated Spruce tree limb in Turnagain Pass, Kenai Peninsula, Southcentral Alaska, Summer
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A Merlin (pigeon hawk) perches on a Spruce tree branch in Turnagain Pass, Kenai Peninsula, Southcentral Alaska, Summer
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A Merlin sqawks while sitting in a Spruce tree branch in Turnagain Pass, Kenai Peninsula, Southcentral Alaska, Summer
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A pair of Merlins (pigeon hawks) sqawk from the branch of a Spruce tree in Turnagain Pass, Kenai Peninsula, Southcentral Alaska, Summer
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Adult Raven feeding its open-mouthed chicks in their nest near Sanctuary Campground, Denali National Park and Preserve, Interior Alaska, Summer
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Dall Sheep ram wearing a radio collar stands on ledge overlooking Polychrome Pass, Denali National Park and Preserve, Interior Alaska, Spring
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Two adult Bull Moose walk through a wet meadow near Wonder Lake in Denali National Park and Preserve, Interior Alaska, Autumn. Digitally altered
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Scenic of bull caribou and tundra pond with the northside of Mt. McKinley in the background, fall colors and Denali in the background, Denali National Park and Preserve, Alaska, Fall, COMPOSITE
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Bull caribou stands amidst the Autumn tundra on the north side of Wonder Lake in Denali National Park & Preserve, Interior Alaska, Fall
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Close up of a male Downy Woodpecker perched on a braket fungus covered birch tree, Chugach Mountains, Southcentral Alaska, Winter
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Bald Eagle perched in the top of an old Spruce tree on a misty morning in the Tongass National Forest, Southeast Alaska, Winter, COMPOSITE
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Bald Eagles perched in the top of an old Spruce tree on a misty morning in the Tongass National Forest, Southeast Alaska, Winter, COMPOSITE
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A Bald Eagle soars above an evergreen forest, Cooper Landing, Kenai Peninsula, Southcentral Alaska, Spring
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Shorebird flock (Mostly Western Sandpipers) scattered and feeding on mud flats of Hartney Bay during Spring migration, Copper River Delta,Southcentral Alaska
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Staging flock of mostly Western Sandpipers lining edges of tidal creek during Spring migration on the Copper River Delta,Southcentral Alaska
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Birdwatcher photographs a large flock of Western Sandpipers and Dunlins on mud flats of Hartney Bay during spring migration, Copper River Delta, Southcentral Alaska
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Birdwatcher photographs a large flock of Western Sandpipers and Dunlins on mud flats of Hartney Bay during spring migration, Copper River Delta, Southcentral Alaska
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Dall Sheep ram opens mouth to expose teeth to test the scent of nearby females during the Fall rut, Denali National Park and Preserve, Interior Alaska, Spring
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View of an adult bull moose with Christmas ornaments hanging from its antlers, Denali National Park and Preserve, Interior Alaska, Winter, COMPOSITE
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A cluster of Western Sanpipers huddle for warmth during a stiff wind off Kachemak Bay, Kenai Peninsula, Southcentral, Spring
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Dunlin checks the mud flats of Kachemak Bay for food during the Spring migration, Kenai Peninsula, Southcentral Alaska, Spring
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Western Sandpiper checks the mud flats of Kachemak Bay for food during the Spring migration, Kenai Peninsula, Southcentral Alaska, Spring
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