Skip to main content
U.S. flag

An official website of the United States government

Images

If you are unable to access or download a product, email fresc_outreach@usgs.gov a request, including the full citation, or call (541) 750-1030.

Filter Total Items: 341
clumps of mostly transparent eggs floating on top of shallow water
Oregon spotted frog egg masses
Oregon spotted frog egg masses
Oregon spotted frog egg masses

Oregon spotted frog egg masses in Gold Lake, Oregon. Oregon spotted frogs lay their eggs in shallow, relatively warm water to promote development.

Oregon spotted frog egg masses in Gold Lake, Oregon. Oregon spotted frogs lay their eggs in shallow, relatively warm water to promote development.

floating clumps of transparent eggs in a lake surrounded by evergreen trees
Oregon spotted frog egg masses in Gold Lake
Oregon spotted frog egg masses in Gold Lake
Oregon spotted frog egg masses in Gold Lake

Oregon spotted frog egg masses floating on the surface of Gold Lake in Oregon. Oregon spotted frogs lay their eggs in the warmer water at the edges of lakes and ponds.

Oregon spotted frog egg masses floating on the surface of Gold Lake in Oregon. Oregon spotted frogs lay their eggs in the warmer water at the edges of lakes and ponds.

controlled burn at Hart Mountain National Wildlife Refuge
Controlled burn at Hart Mountain National Wildlife Refuge
Controlled burn at Hart Mountain National Wildlife Refuge
Controlled burn at Hart Mountain National Wildlife Refuge

controlled burn at Hart Mountain National Wildlife Refuge

Controlled burn at Hart Mountain National Wildlife Refuge.
Controlled burn at Hart Mountain National Wildlife Refuge.
Controlled burn at Hart Mountain National Wildlife Refuge.
Controlled burn at Hart Mountain National Wildlife Refuge.

Wildfire is one of the largest sources of re-released mercury to the atmosphere and a component to the widespread movement of inorganic mercury to aquatic sediments.

Wildfire is one of the largest sources of re-released mercury to the atmosphere and a component to the widespread movement of inorganic mercury to aquatic sediments.

Sagebrush on fire in a controlled burn
Sagebrush on fire in a controlled burn
Sagebrush on fire in a controlled burn
Sagebrush on fire in a controlled burn

Controlled burn at Hart Mountain National Wildlife Refuge, Oregon.

Controlled burn at Hart Mountain National Wildlife Refuge, Oregon.

Image: Brewer's Sparrow Surveys
Brewer's Sparrow Surveys
Brewer's Sparrow Surveys
Brewer's Sparrow Surveys

Conducing Brewer's sparrow (Spizella breweri) surveys in sagebrush habitat, Owyhee Moutains, SW Idaho.

Conducing Brewer's sparrow (Spizella breweri) surveys in sagebrush habitat, Owyhee Moutains, SW Idaho.

Image: Brewer's Sparrow Nest in Sagebrush
Brewer's Sparrow Nest in Sagebrush
Brewer's Sparrow Nest in Sagebrush
Brewer's Sparrow Nest in Sagebrush

Top view of Brewer's sparrow (Spizella breweri) nest in sagebrush (Artemisia tridentata), Owyhee Mountains, SW Idaho.

Top view of Brewer's sparrow (Spizella breweri) nest in sagebrush (Artemisia tridentata), Owyhee Mountains, SW Idaho.

Central Nevada Sagebrush
Central Nevada Sagebrush
Central Nevada Sagebrush
Sagebrush grasslands
Sagebrush Grasslands
Sagebrush Grasslands
Sagebrush-grasslands
Sagebrush-grasslands
Sagebrush-grasslands
Image: Brewer's Sparrow Nest
Brewer's Sparrow Nest
Brewer's Sparrow Nest
Brewer's Sparrow Nest

Unhatched eggs in Brewer's sparrow (Spizella breweri) nest.

Image: Brewer's Sparrow in Hand
Brewer's Sparrow in Hand
Brewer's Sparrow in Hand
Brewer's Sparrow in Hand

Brewer's sparrow (Spizella breweri) held by field technician.

Image: Brewer's Sparrow
Brewer's Sparrow
Brewer's Sparrow
Brewer's Sparrow

John Warzybok secures a Brewer's sparrow (Spizella breweri), White Sands Missle Range, New Mexico.

John Warzybok secures a Brewer's sparrow (Spizella breweri), White Sands Missle Range, New Mexico.

Image: Brewer's Sparrow Being Held for Assessment
Brewer's Sparrow Being Held for Assessment
Brewer's Sparrow Being Held for Assessment
Brewer's Sparrow Being Held for Assessment

John Warzybok records data whille Caroline Poli secures a Brewer's sparrow (Spizella breweri) for assessment, White Sands Missile Range, New Mexico.

John Warzybok records data whille Caroline Poli secures a Brewer's sparrow (Spizella breweri) for assessment, White Sands Missile Range, New Mexico.

Image: Brewer's Sparrow Being Held for Assessment
Brewer's Sparrow Being Held for Assessment
Brewer's Sparrow Being Held for Assessment
Brewer's Sparrow Being Held for Assessment

John Warzybok records data whille Caroline Poli secures a Brewer's sparrow (Spizella breweri) for assessment, White Sands Missile Range, New Mexico.

John Warzybok records data whille Caroline Poli secures a Brewer's sparrow (Spizella breweri) for assessment, White Sands Missile Range, New Mexico.

Image: Measurement of Brewer's Sparrow
Measurement of Brewer's Sparrow
Measurement of Brewer's Sparrow
Measurement of Brewer's Sparrow

Brewer's sparrow (Spizella breweri) being measured, White Sands Missile Range, New Mexico.

Brewer's sparrow (Spizella breweri) being measured, White Sands Missile Range, New Mexico.

Image: Brewer's Sparrows Being Assessed
Brewer's Sparrows Being Assessed
Brewer's Sparrows Being Assessed
Brewer's Sparrows Being Assessed

Caroline Poli and John Warzybok assess Brewer's sparrows (Spizella breweri) at White Sands Missile Range, New Mexico.

Caroline Poli and John Warzybok assess Brewer's sparrows (Spizella breweri) at White Sands Missile Range, New Mexico.

Image: Brewer's Sparrow Being Weighed
Brewer's Sparrow Being Weighed
Brewer's Sparrow Being Weighed
Brewer's Sparrow Being Weighed

Brewer's sparrow (Spizella breweri) being weighed on digital scale, White Sands Missile Range, New Mexico.

Brewer's sparrow (Spizella breweri) being weighed on digital scale, White Sands Missile Range, New Mexico.

Image: Bagged Brewer's Sparrows
Bagged Brewer's Sparrows
Bagged Brewer's Sparrows
Bagged Brewer's Sparrows

Sampling bags holding Brewer's sparrows (Spizella breweri), White Sands Missile Range, New Mexico.

Sampling bags holding Brewer's sparrows (Spizella breweri), White Sands Missile Range, New Mexico.

Image: Brewer's Sparrow Being Assessed
Brewer's Sparrow Being Assessed
Brewer's Sparrow Being Assessed
Brewer's Sparrow Being Assessed

John Warzybok assesses a Brewer's sparrow (Spizella breweri) at White Sands Missile Range, New Mexico.

John Warzybok assesses a Brewer's sparrow (Spizella breweri) at White Sands Missile Range, New Mexico.