Formation of American avocets proceeding through shallow water. As they feed, they are accompanied by a wading egret, possibly a Reddish egret.
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American Avocets and Egret 1
Formation of American avocets proceeding through shallow water. As they feed, they are accompanied by a wading egret, possibly a Reddish egret.
American Avocets and Egret 2
Formation of American avocets proceeding through shallow water. As they feed, they are accompanied by a wading egret, possibly a Reddish egret.
Formation of American avocets proceeding through shallow water. As they feed, they are accompanied by a wading egret, possibly a Reddish egret.
American Coots (Fulica americana)
American coots at the Merritt Island National Wildlife Refuge. Individuals shown have black feathers, red eyes, and a white bill.
American coots at the Merritt Island National Wildlife Refuge. Individuals shown have black feathers, red eyes, and a white bill.
American Coots (Fulica americana)
American coots at the Merritt Island National Wildlife Refuge. Individuals shown have black feathers, red eyes, and a white bill.
American coots at the Merritt Island National Wildlife Refuge. Individuals shown have black feathers, red eyes, and a white bill.
American Coots (Fulica americana)
American coots at the Merritt Island National Wildlife Refuge. Individuals shown have black feathers, red eyes, and a white bill.
American coots at the Merritt Island National Wildlife Refuge. Individuals shown have black feathers, red eyes, and a white bill.
Wolf in Yellowstone National Park
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolf in Yellowstone National Park
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolf in Yellowstone National Park
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
Wolves were reintroduced to Yellowstone National Park in 1995 and 1996.
A fire ecologist takes pictures of the location of the Red Eagle Fire.
A fire ecologist takes pictures of the location of the Red Eagle Fire.A fire ecologist takes pictures of the location of the Red Eagle Fire in Montana, 2007.
A fire ecologist takes pictures of the location of the Red Eagle Fire.
A fire ecologist takes pictures of the location of the Red Eagle Fire.A fire ecologist takes pictures of the location of the Red Eagle Fire in Montana, 2007.
An elk grazes in Yellowstone National Park.
Aerial view of the National Elk Refuge & Inset Map
Aerial view of the National Elk Refuge & Inset MapAerial view of the National Elk Refuge (left) and the town of Jackson, Wyoming (right) with inset map of study area including the National Elk Refuge and areas around the refuge of winter elk habitat.
Aerial view of the National Elk Refuge & Inset Map
Aerial view of the National Elk Refuge & Inset MapAerial view of the National Elk Refuge (left) and the town of Jackson, Wyoming (right) with inset map of study area including the National Elk Refuge and areas around the refuge of winter elk habitat.
Post-Harvest Rice Straw
After harvest, fields are reflooded to decay the remaining straw. This decaying material can fuel the bacteria that create methylmercury, even during the cold months.
After harvest, fields are reflooded to decay the remaining straw. This decaying material can fuel the bacteria that create methylmercury, even during the cold months.
Taking surface sediment measurements at Crissy Marsh in San Francisco, CA.
Taking surface sediment measurements at Crissy Marsh in San Francisco, CA.USGS researcher Jennifer Agee taking surface sediment oxidation-reduction and pH measurements at Crissy Marsh, a vegetated saltmarsh near the Golden Gate Bridge (background) in San Francisco, CA. Photographer: L. Windham-Myers.
Taking surface sediment measurements at Crissy Marsh in San Francisco, CA.
Taking surface sediment measurements at Crissy Marsh in San Francisco, CA.USGS researcher Jennifer Agee taking surface sediment oxidation-reduction and pH measurements at Crissy Marsh, a vegetated saltmarsh near the Golden Gate Bridge (background) in San Francisco, CA. Photographer: L. Windham-Myers.
Adult Alligator
Large adult
Blue Ridge Parkway in Autumn
A section of the Blue Ridge Parkway in North Carolina with many fall colors underway.
A section of the Blue Ridge Parkway in North Carolina with many fall colors underway.
Cross Section of Sagittal Otolith
Cross section of a sagittal otolith from a juvenile Chinook salmon 79 days after emergence. The letters represent: H = hatch, E = emergence, FF = first feed, FW = freshwater residence, TDCK = tidal delta check, and D = tidal delta residence (40x objective).
Cross section of a sagittal otolith from a juvenile Chinook salmon 79 days after emergence. The letters represent: H = hatch, E = emergence, FF = first feed, FW = freshwater residence, TDCK = tidal delta check, and D = tidal delta residence (40x objective).
Mountain Lane and Pasture
A pasture and a bucolic country lane near Lake Glenville, North Carolina.
A pasture and a bucolic country lane near Lake Glenville, North Carolina.
Mountain Lane and Pasture
A pasture and a bucolic country lane near Lake Glenville, North Carolina.
A pasture and a bucolic country lane near Lake Glenville, North Carolina.
Mountain Lane and Pasture
A pasture and a bucolic country lane near Lake Glenville, North Carolina.
A pasture and a bucolic country lane near Lake Glenville, North Carolina.
Tree Farm
This tree farm in the mountains of western North Carolina generates income for its owners each year during North America's December holiday seasons.
This tree farm in the mountains of western North Carolina generates income for its owners each year during North America's December holiday seasons.
Tree Farm
This tree farm in the mountains of western North Carolina generates income forits owners each year during North America's December holiday seasons.
This tree farm in the mountains of western North Carolina generates income forits owners each year during North America's December holiday seasons.