Back view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
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Back view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Side view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Side view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Brewer's sparrow (Spizella breweri) wing spread close up.
Brewer's sparrow (Spizella breweri) wing spread close up.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Vacant Brewer's sparrow (Spizella breweri) nest.
Vacant Brewer's sparrow (Spizella breweri) nest.
Vacant Brewer's sparrow (Spizella breweri) nest.
Vacant Brewer's sparrow (Spizella breweri) nest.
Wintering habitat for the sagebrush sparrow (Artemisiospiza nevadensis), Mesquite Lakes, Nevada.
Wintering habitat for the sagebrush sparrow (Artemisiospiza nevadensis), Mesquite Lakes, Nevada.
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.
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.
Brewer's sparrow (Spizella breweri) and sagebush sparrow (Artemisiospiza nevadensis) breeding habitat in central Nevada.
Brewer's sparrow (Spizella breweri) and sagebush sparrow (Artemisiospiza nevadensis) breeding habitat in central Nevada.
Unhatched eggs in Brewer's sparrow (Spizella breweri) nest.
Unhatched eggs in Brewer's sparrow (Spizella breweri) nest.
Brewer's sparrow (Spizella breweri) held by field technician.
Brewer's sparrow (Spizella breweri) held by field technician.
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.
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.
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.
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.
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.
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.
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.
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.
Science and Products
Back view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Back view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Side view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Side view of Brewer's sparrow (Spizella breweri) in USGS field worker's hand.
Brewer's sparrow (Spizella breweri) wing spread close up.
Brewer's sparrow (Spizella breweri) wing spread close up.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Two Brewer's sparrow (Spizella breweri) chicks and one egg in nest, Steens Mountain, SE Oregon.
Vacant Brewer's sparrow (Spizella breweri) nest.
Vacant Brewer's sparrow (Spizella breweri) nest.
Vacant Brewer's sparrow (Spizella breweri) nest.
Vacant Brewer's sparrow (Spizella breweri) nest.
Wintering habitat for the sagebrush sparrow (Artemisiospiza nevadensis), Mesquite Lakes, Nevada.
Wintering habitat for the sagebrush sparrow (Artemisiospiza nevadensis), Mesquite Lakes, Nevada.
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.
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.
Brewer's sparrow (Spizella breweri) and sagebush sparrow (Artemisiospiza nevadensis) breeding habitat in central Nevada.
Brewer's sparrow (Spizella breweri) and sagebush sparrow (Artemisiospiza nevadensis) breeding habitat in central Nevada.
Unhatched eggs in Brewer's sparrow (Spizella breweri) nest.
Unhatched eggs in Brewer's sparrow (Spizella breweri) nest.
Brewer's sparrow (Spizella breweri) held by field technician.
Brewer's sparrow (Spizella breweri) held by field technician.
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.
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.
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.
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.
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.
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.
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.
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.