John Warzybok assesses a Brewer's sparrow (Spizella breweri) at White Sands Missile Range, New Mexico.
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John Warzybok assesses a Brewer's sparrow (Spizella breweri) at White Sands Missile Range, New Mexico.
Adult Columbia spotted frog photographed in Greenhorn pond in the Blue Mountains of Oregon
Adult Columbia spotted frog photographed in Greenhorn pond in the Blue Mountains of Oregon
USGS' Steve Hanser holding a Brewer's sparrow (Spizella breweri).
USGS' Steve Hanser holding a Brewer's sparrow (Spizella breweri).
Sagebrush-dominated ecoregions in the western United States (sagebrush cover types shown in various shades of yellow, pink, and blue-grey).
Sagebrush-dominated ecoregions in the western United States (sagebrush cover types shown in various shades of yellow, pink, and blue-grey).
Clay-colored sparrow nest.
Clay-colored sparrow nest.
A colorful clay-colored sparrow nest. These sparrows live in brushy grasslands and prairie habitats.
A colorful clay-colored sparrow nest. These sparrows live in brushy grasslands and prairie habitats.