Downstream view of Colorado River at its confluence with the Little Colorado River
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Downstream view of Colorado River at LCR confluence
Downstream view of Colorado River at its confluence with the Little Colorado River
Wood Turtle (Glyptemys insculpta)
The spotted plastron of a Wood turtle.
The spotted plastron of a Wood turtle.
Coyote (Canis latrans)
Coyote standing in sage brush on a ridge.
Coyote standing in sage brush on a ridge.
Laughing Gull (Larus atricilla)
Laughing gull perched on post.
Laughing gull perched on post.
Roseate Spoonbill (Platalea ajaja)
A flock of Roseate Spoonbills standing in water.
A flock of Roseate Spoonbills standing in water.
Great Egrets (Ardea alba)
A flock of Great Egrets standing in grass at the Merritt Island National Wildlife Refuge.
A flock of Great Egrets standing in grass at the Merritt Island National Wildlife Refuge.
Salt Marsh and Cabbage Palms
Overlooks an estuarine waterway lined by marsh grasses, cabbage palms, and woodland.
Overlooks an estuarine waterway lined by marsh grasses, cabbage palms, and woodland.
Squirrel Treefrog in Florida
A native squirrel treefrog in Florida.
A native squirrel treefrog in Florida.
A Green Treefrog in Florida
A native green treefrog in Florida.
A native green treefrog in Florida.
Red-Winged Blackbird (Agelaius phoeniceus)
A male Blackbird in field grass.
A male Blackbird in field grass.
Boreal toad (Bufo boreas) mating ball
Boreal toad (Bufo boreas) mating ball, Bridger-Teton National Forest, Wyoming.
Boreal toad (Bufo boreas) mating ball, Bridger-Teton National Forest, Wyoming.
Performing Routine Calibration of an Air Sampler
USGS scientist performing a routine calibration of an instrument used to collect air samples at a gasoline spill site in Galloway Township, New Jersey. The air samples were analyzed for volatile organic compounds (VOCs).
USGS scientist performing a routine calibration of an instrument used to collect air samples at a gasoline spill site in Galloway Township, New Jersey. The air samples were analyzed for volatile organic compounds (VOCs).
Salt Scar near Lake Skiatook, OK Caused by a Produced-Water Spill
Salt scar near Lake Skiatook, Oklahoma, caused by a produced-water spill
Salt scar near Lake Skiatook, Oklahoma, caused by a produced-water spill
Corbicula sampling in the Bonneville Pool, Columbia River
Corbicula sampling in the Bonneville Pool, Columbia River.
Corbicula sampling in the Bonneville Pool, Columbia River.
Sturgeon Egg
At 68 hours post fertilization, this laboratory produced sturgeon egg is about ready to hatch.
At 68 hours post fertilization, this laboratory produced sturgeon egg is about ready to hatch.
Fish seining efforts on the Colorado River
Fish seining efforts on the Colorado River
Fish seining efforts on the Colorado River
Ayers Rock (Uluru)
Ayers Rock (Uluru) and vegetation.
Ayers Rock (Uluru) and vegetation.
Rocks and Vegetation
An array of rocks with vegetation interspersed.
An array of rocks with vegetation interspersed.
Stream Bordered by Snow-Covered Trees and Low-Lying Vegetation
Snow covers the coniferous trees and low-lying vegetation on either side of a calm stream.
Snow covers the coniferous trees and low-lying vegetation on either side of a calm stream.
Stream Bordered by Snow-Covered Trees and Low-Lying Vegetation
Snow covers the coniferous trees and low-lying vegetation on either side of a calm stream or river.
Snow covers the coniferous trees and low-lying vegetation on either side of a calm stream or river.
Cassin's Auklet
Cassin's auklet with a radio transmitter attached for a study in the Channel Islands.
Cassin's auklet with a radio transmitter attached for a study in the Channel Islands.