Yukon Delta National Wildlife Refuge, Alaska.
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Black Brant
Black Brant In Flight
Yukon Delta National Wildlife Refuge, Alaska.
Yukon Delta National Wildlife Refuge, Alaska.
Canada Goose Nest with Eggs
Yukon Delta National Wildlife Refuge, Alaska.
Yukon Delta National Wildlife Refuge, Alaska.
Sabine's Gull in Flight
Yukon Delta National Wildlife Refuge, Alaska.
Yukon Delta National Wildlife Refuge, Alaska.
Spectacled Female Eider on Nest
Yukon Delta National Wildlife Refuge, Alaska.
Yukon Delta National Wildlife Refuge, Alaska.
Western Sandpiper
Yukon Delta National Wildlife Refuge, Alaska.
Yukon Delta National Wildlife Refuge, Alaska.
Brewer's Sparrow Nest
Unhatched eggs in Brewer's sparrow (Spizella breweri) nest.
Unhatched eggs in Brewer's sparrow (Spizella breweri) nest.
Black-necked Stilt Anti-predator Behavior
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Black-necked Stilt Anti-predator Behavior
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Maui
Landsat image of Maui, Hawaiʻi, with the small island of Kahoʻolawe to its south.
Landsat image of Maui, Hawaiʻi, with the small island of Kahoʻolawe to its south.
Sand lance catch from a beach seine in the Aleutian Islands
Pacific sand lance catch from a beach seine in the Aleutian Islands.
Pacific sand lance catch from a beach seine in the Aleutian Islands.
Taku River in Southeast Alaska
Taku River is one of the transboundary watersheds of Southeast Alaska.
Taku River is one of the transboundary watersheds of Southeast Alaska.
Green River at Mammoth Cave National Park, KY
View of the Green River along a trail in Mammoth Cave National Park. USGS operates gages on the river above and below the Park Boundaries.
View of the Green River along a trail in Mammoth Cave National Park. USGS operates gages on the river above and below the Park Boundaries.
Green River Reflections, Mammoth Cave National Park, KY
View of the Green River along a trail in Mammoth Cave National Park. USGS operates gages on the river above and below the Park Boundaries.
View of the Green River along a trail in Mammoth Cave National Park. USGS operates gages on the river above and below the Park Boundaries.
Tree swallow nestlings (Tachycineta bicolor) in a nesting box
Tree swallow nestlings (Tachycineta bicolor) in a nesting box
Tree swallow nestlings (Tachycineta bicolor) in a nesting box
Lava Level Change in PKK Tube Skylight (June 11, 2006)
To document changes in the lava stream level within the Prince Kuhio Kalaniana'ole (PKK) lava tube, a time-lapse camera was placed on the brink of a lava tube skylight (an opening in the roof of the lava tube) with a view of the lava.
To document changes in the lava stream level within the Prince Kuhio Kalaniana'ole (PKK) lava tube, a time-lapse camera was placed on the brink of a lava tube skylight (an opening in the roof of the lava tube) with a view of the lava.
Tropical Beach with Coconut Palm and Seagrapes
Coconut palm, sea grapes, and a white sand beach overlooking Drake's Passage from the island of Tortola in the British Virgin Islands.
Coconut palm, sea grapes, and a white sand beach overlooking Drake's Passage from the island of Tortola in the British Virgin Islands.
Black-necked Stilt Chick with Radio Telemetry Package
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
Black-necked Stilt Nesting Male
Birds found in and around the Salton Sea, California.
Birds found in and around the Salton Sea, California.
