A Black-capped Chickadee with an upper beak slightly longer than the lower beak. Avian keratin disorder (AKD) is a disease characterized by debilitating beak overgrowth and other abnormalities of keratinized tissues. Affected birds have difficulty feeding and preening and may suffer high rates of mortality.
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Black-capped Chickadee with a mildly deformed beak
A Black-capped Chickadee with an upper beak slightly longer than the lower beak. Avian keratin disorder (AKD) is a disease characterized by debilitating beak overgrowth and other abnormalities of keratinized tissues. Affected birds have difficulty feeding and preening and may suffer high rates of mortality.
Black-capped chickadee captured at an Anchorage banding station
A black-capped chickadee with a normal beak captured at an Anchorage banding station.
A black-capped chickadee with a normal beak captured at an Anchorage banding station.
Slate-colored Junco
A Slate-colored Junco on Middleton Island, Alaska.
A Slate-colored Junco on Middleton Island, Alaska.
Wildfire and Alaskan Permafrost
Deploying geophysical equipment in the Nome Creek (AK) area to assess the effect of wildfire on permafrost. Small electrical signals are injected into the ground through metal stakes connected to the orange cable in the foreground. The measured response is used to detect belowground permafrost conditions.
Deploying geophysical equipment in the Nome Creek (AK) area to assess the effect of wildfire on permafrost. Small electrical signals are injected into the ground through metal stakes connected to the orange cable in the foreground. The measured response is used to detect belowground permafrost conditions.
Taking soil samples
USGS researchers collecting a soil sample for rare earth elements at the Roy Creek prospect, Alaska. Jamey Jones is holding the bag while Erin Todd shovels soil into the bag.
USGS researchers collecting a soil sample for rare earth elements at the Roy Creek prospect, Alaska. Jamey Jones is holding the bag while Erin Todd shovels soil into the bag.
Reducing the likelihood of fire damage to archaeological resources
Fuel treatments and prescribed fires can be used to reduce the likelihood that archaeological resources will be damaged by high severity fires
Fuel treatments and prescribed fires can be used to reduce the likelihood that archaeological resources will be damaged by high severity fires
Deploying fire instruments during a wildfire
Fire behavior instruments are deployed during wildfires and prescribed fires to provide data on the types of fire environments that damage archaeological resources
Fire behavior instruments are deployed during wildfires and prescribed fires to provide data on the types of fire environments that damage archaeological resources
A scenic view of an Aleutian island with fireweed in full bloom
A scenic view of an Aleutian island with fireweed in full bloom
A scenic view of an Aleutian island with fireweed in full bloom
Black-legged Kittiwake on a nest
Black-legged Kittiwake on a nest on the side of a rock face in the Aleutian Islands.
Black-legged Kittiwake on a nest on the side of a rock face in the Aleutian Islands.
A huge colony of Common Murres in the Aleutian Islands
A huge colony of Common Murres in the Aleutian Islands
A huge colony of Common Murres in the Aleutian Islands
A Northern Fulmar attends its nest on Suklik Island, Alasaka
Northern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
Northern Fulmars, Black-legged Kittiwakes, and Common Murres have all been tested for and contained harmful algal bloom (HAB) toxins. Since 2015, the USGS has worked with a variety of stakeholders to develop testing methods and research projects to better understand the geographic extent, timing and impacts of algal toxins in Alaska marine ecosystems.
A Peregrine Falcon near Puffin burrow areas in the Aleutian Islands
A Peregrine Falcon near Puffin burrow areas in the Aleutian Islands
A Peregrine Falcon near Puffin burrow areas in the Aleutian Islands
A Tufted Puffin swimming in the water in the Aleutian Islands
A Tufted Puffin swimming in the water in the Aleutian Islands
A Tufted Puffin swimming in the water in the Aleutian Islands
Horned Puffin flying near it's burrow area in the Aleutian Islands
Horned Puffin flying near it's burrow area in the Aleutian Islands
Horned Puffin flying near it's burrow area in the Aleutian Islands
Tufted Puffin looking for fish around the Aleutian Islands
Tufted Puffin looking for fish near it's burrow area in the Aleutian Islands
Tufted Puffin looking for fish near it's burrow area in the Aleutian Islands
Tufted Puffin carrying fish
Tufted Puffin carrying fish to bring back to it's young in it's burrow.
Tufted Puffin carrying fish to bring back to it's young in it's burrow.
A stream and helicopter in the Agashashok River watershed
A stream type at the Boreal-Arctic transition of the Brooks Range, Noatak National Park and Preserve, Kobuk Valley National Park. The stream is in the Agashashok River watershed. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
A stream type at the Boreal-Arctic transition of the Brooks Range, Noatak National Park and Preserve, Kobuk Valley National Park. The stream is in the Agashashok River watershed. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
A stream in the Agashashok River watershed
A stream type at the Boreal-Arctic transition of the Brooks Range, Noatak National Park and Preserve, Kobuk Valley National Park. The stream is in the Agashashok River watershed. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
A stream type at the Boreal-Arctic transition of the Brooks Range, Noatak National Park and Preserve, Kobuk Valley National Park. The stream is in the Agashashok River watershed. This is part of the Hydro-Ecoloy of Arctic Thawing (HEAT) project.
Beach seining in Salmon Lake, the headwaters of the Pilgrim River
Beach seining on the spawing grounds of sockeye salmon in Salmon Lake. This is the headwater of the Pilgrim River which is the northern edge of the sockeye salmon distribution.
Beach seining on the spawing grounds of sockeye salmon in Salmon Lake. This is the headwater of the Pilgrim River which is the northern edge of the sockeye salmon distribution.
Biologists pulling in a small purse seine in Prince William Sound
Sarah Schoen, Erica Madison, and Mayumi Arimitsu pulling in a small purse seine to capture Pacific sand lance in Prince William Sound.
Sarah Schoen, Erica Madison, and Mayumi Arimitsu pulling in a small purse seine to capture Pacific sand lance in Prince William Sound.