Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
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Four Brewer's Sparrow Chicks
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Chicks
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Four Brewer's sparrow (Spizella breweri) chicks 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.
Brewer's Sparrow Chicks
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Four Brewer's sparrow (Spizella breweri) chicks in nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Chicks
Brewer's sparrow (Spizella breweri) chicks and egg in nest, Steens Mountain, SE Oregon.
Brewer's sparrow (Spizella breweri) chicks and egg in nest, Steens Mountain, SE Oregon.
Brewer's Sparrow Chicks
Brewer's sparrow (Spizella breweri) chicks and egg in nest, Steens Mountain, SE Oregon.
Brewer's sparrow (Spizella breweri) chicks and egg 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.
Brewer's Sparrow Chicks
Brewer's sparrow (Spizella breweri) chicks and egg in nest, Steens Mountain, SE Oregon.
Brewer's sparrow (Spizella breweri) chicks and egg 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.
Sonoran Desert Tortoise
An Agassiz's desert tortoise in a wind energy facility near Palm Springs, California. USGS scientists have been studying the ecology of tortoises at this industrial site since the mid-1990s to learn more about the effects of utility-scale renewable energy development and operation on these threatened tortoises.
An Agassiz's desert tortoise in a wind energy facility near Palm Springs, California. USGS scientists have been studying the ecology of tortoises at this industrial site since the mid-1990s to learn more about the effects of utility-scale renewable energy development and operation on these threatened tortoises.
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.
Brewer's Sparrow Chicks
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
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 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.
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.
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.
Brewer's Sparrow Chicks
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.
Preserved mountain pine beetles next to a killed pine
Preserved mountain pine beetles next to a killed pinePreserved mature mountain pine beetles are held next to the trunk of a dead pine.
Preserved mountain pine beetles next to a killed pine
Preserved mountain pine beetles next to a killed pinePreserved mature mountain pine beetles are held next to the trunk of a dead pine.
Red needles signify dying pines
Reddish, dry needles are a sign of dying trees infested with mountain pine beetles.
Reddish, dry needles are a sign of dying trees infested with mountain pine beetles.
Blue beetle-killed pine park
Stripped bark from a dead pine tree reveals the tell-tale blue streaks of a mountain pine beetle attack.
Stripped bark from a dead pine tree reveals the tell-tale blue streaks of a mountain pine beetle attack.
Beetle-killed pine with USGS marker
This dead pine has been marked by USGS scientists studying the effects of mountain pine beetles on forest ecology.
This dead pine has been marked by USGS scientists studying the effects of mountain pine beetles on forest ecology.