Depredated Brewer's sparrow (Spizella breweri) chick and nest, Steens Mountain, SE Oregon.
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Brewer's Sparrow Chicks
Depredated Brewer's sparrow (Spizella breweri) chick and nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Nest
Depredated Brewer's sparrow (Spizella breweri) chick and nest, Steens Mountain, SE Oregon.
Depredated Brewer's sparrow (Spizella breweri) chick and nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Nest
Four blue Brewer's sparrow (Spizella breweri) eggs in nest, Steens Mountain, SE Oregon.
Four blue Brewer's sparrow (Spizella breweri) eggs in nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Chicks
Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Loading the Syringe
Sean Shea loads the PIT tag onto a syringe.
Sean Shea loads the PIT tag onto a syringe.
Building precipitation manipulation plots in a common garden
The scientists are running PVC pipes that will irrigate plants in a common garden.
The scientists are running PVC pipes that will irrigate plants in a common garden.
Implanting a radio tag into a fish
Implanting a radio tag into a fish.
Implanting a radio tag into a fish.
Northern gannet (Morus bassanus)
Northern gannet (Morus bassanus) seen during field work in Iceland in 2013.
Northern gannet (Morus bassanus) seen during field work in Iceland in 2013.
Northern gannet (Morus bassanus)
Northern gannet (Morus bassanus) seen during field work in Iceland in 2013.
Northern gannet (Morus bassanus) seen during field work in Iceland in 2013.
Centrarchid
Two Centrarchid larvae sampled in the Missouri River near Plattsmouth.
Two Centrarchid larvae sampled in the Missouri River near Plattsmouth.
Catostomid&Centrarchid
Two Centrarchid larvae and one Catostomid larvae sampled in the Missouri River near Plattsmouth.
Two Centrarchid larvae and one Catostomid larvae sampled in the Missouri River near Plattsmouth.
Hiodontid&Catostomid
Three Hiodontid eggs, one Hiodontid larvae, and one Catostomid larvae sampled in the Missouri River near Plattsmouth.
Three Hiodontid eggs, one Hiodontid larvae, and one Catostomid larvae sampled in the Missouri River near Plattsmouth.
Inspecting the Eggs
The quality of pallid sturgeon eggs is verified under the microscope prior to fertilization.
The quality of pallid sturgeon eggs is verified under the microscope prior to fertilization.
Pallid Sturgeon Egg Dispersal
Fertilized pallid sturgeon eggs are gently dispersed over the gravel substrate. The PVC pipes are used to support a canopy of shade cloth to more closely mimic the muddy depths of the Missouri River.
Fertilized pallid sturgeon eggs are gently dispersed over the gravel substrate. The PVC pipes are used to support a canopy of shade cloth to more closely mimic the muddy depths of the Missouri River.
Pallid Sturgeon Eggs on Gravel Substrate
Fertilized pallid sturgeon eggs become sticky and adhere to gravel substrate.
Fertilized pallid sturgeon eggs become sticky and adhere to gravel substrate.
Deep Sea Rockling Fish Among Mussels
A species of rockling (Family Lotidae), related to hakes and cods, rests among the mussels. Images courtesy Deepwater Canyons 2013 - Pathways to the Abyss expedition, NOAA-OER/BOEM/USGS.
A species of rockling (Family Lotidae), related to hakes and cods, rests among the mussels. Images courtesy Deepwater Canyons 2013 - Pathways to the Abyss expedition, NOAA-OER/BOEM/USGS.
Brown Trout
Idaho Water Science Center biologists work with Silver Creek Preserve staff and volunteers to collect, examine, identify, measure, and count fish populations.
Idaho Water Science Center biologists work with Silver Creek Preserve staff and volunteers to collect, examine, identify, measure, and count fish populations.
Green Sea Turtle Release from Boat
USGS biologists Kristen Hart, Jeff Beauchamp, and Thomas Shelby prepare to release a green sea turtle fitted with a satellite tag in the waters of Dry Tortugas National Park. Note: All marine turtle images taken in Florida were obtained with the approval of the U.S.
USGS biologists Kristen Hart, Jeff Beauchamp, and Thomas Shelby prepare to release a green sea turtle fitted with a satellite tag in the waters of Dry Tortugas National Park. Note: All marine turtle images taken in Florida were obtained with the approval of the U.S.
Grand Canyon sunset from South Rim
Grand Canyon sunset from South Rim taken during USGS field work, April 2013.
Grand Canyon sunset from South Rim taken during USGS field work, April 2013.
Boinin Petrel Chick
Boinin petrel chick, a subterranean nesting seabird especially vulnerable to sea-level rise.
Location: Midway Atoll National Wildlife Refuge
Boinin petrel chick, a subterranean nesting seabird especially vulnerable to sea-level rise.
Location: Midway Atoll National Wildlife Refuge
Laysan Albatross and Bonin Petrel Chick
Laysan albatross and Bonin petrel chick, two seabird species especially vulnerable to sea-level rise and sudden flooding on low-lying islands.
Location: Midway Atoll National Wildlife Refuge
Laysan albatross and Bonin petrel chick, two seabird species especially vulnerable to sea-level rise and sudden flooding on low-lying islands.
Location: Midway Atoll National Wildlife Refuge