Barred owls (Strix varia) have expanded their geographic range from eastern to western North America. Their newly expanded range now completely overlaps that of the federally threatened northern spotted owl (S. occidentalis caurina).
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Barred owl
Barred owls (Strix varia) have expanded their geographic range from eastern to western North America. Their newly expanded range now completely overlaps that of the federally threatened northern spotted owl (S. occidentalis caurina).
Approaching sleet storm at Stinkingwater Mountains, Oregon
A sleet storm approaches the sagebrush habitat at the south end Stinkingwater Mountians near Warm Springs Reservoir in eastern Oregon
A sleet storm approaches the sagebrush habitat at the south end Stinkingwater Mountians near Warm Springs Reservoir in eastern Oregon
Methow River near Winthrop, WA in fall of 2011
Methow River near Winthrop, WA in fall of 2011. USGS researchers are creating a decision support model to help the BLM determine how alternative restoration strategies might affect threatened salmon and steelhead fish populations.
Methow River near Winthrop, WA in fall of 2011. USGS researchers are creating a decision support model to help the BLM determine how alternative restoration strategies might affect threatened salmon and steelhead fish populations.
Experiments on sagebrush in a common garden
Two USGS scientists set up equipment to measure sagebrush in a common garden experiment in the Great Basin, Idaho
Two USGS scientists set up equipment to measure sagebrush in a common garden experiment in the Great Basin, Idaho
Filtering stream water to collect environmental DNA
Filtering stream water to collect environmental DNA from stream amphibians
Filtering stream water to collect environmental DNA from stream amphibians
Collecting DNA in the Boise River (Boise, ID)
Collecting a 1-liter water sample in the Boise River for eDNA analysis (Boise, ID)"
Collecting a 1-liter water sample in the Boise River for eDNA analysis (Boise, ID)"
Western grebe in Summer Lake
A western grebe in Summer Lake, a saline lake in Oregon that is an important habitat for waterbirds. The grebe was photographed during a survey of waterbird nesting colonies.
A western grebe in Summer Lake, a saline lake in Oregon that is an important habitat for waterbirds. The grebe was photographed during a survey of waterbird nesting colonies.
American avocet wading in Summer Lake
An American avocet wading in Summer Lake, a saline lake in Oregon. Summer Lake is an important habitat for migratory water birds.
An American avocet wading in Summer Lake, a saline lake in Oregon. Summer Lake is an important habitat for migratory water birds.
Long-billed curlew in Summer Lake
A long-billed curlew wading in the Summer Lake Wildlife Area. Summer Lake is a saline lake in Oregon that is an important habitat for waterbirds.
A long-billed curlew wading in the Summer Lake Wildlife Area. Summer Lake is a saline lake in Oregon that is an important habitat for waterbirds.
Dry wetlands in the Summer Lake Wildlife Area
Dry wetlands around Summer Lake photographed during a drought in 2011. Summer Lake is a saline lake in Oregon that is an important habitat for waterbirds.
Dry wetlands around Summer Lake photographed during a drought in 2011. Summer Lake is a saline lake in Oregon that is an important habitat for waterbirds.
Field sampling boat with USGS PFD in the Great Salt wetlands
Wetland habitats, such as the Great Salt Lake wetlands, provide critical feeding areas for many fish and wildlife species.
Wetland habitats, such as the Great Salt Lake wetlands, provide critical feeding areas for many fish and wildlife species.
Frozen fish samples for mercury analysis
Frozen fish samples awaiting mercury analysis
Frozen fish samples awaiting mercury analysis
Rogue River canyon in southwest Oregon
Rogue River canyon in southwest Oregon
Rogue River canyon in southwest Oregon
Idaho giant salamander
Idaho giant salamander as seen from above
Idaho giant salamander as seen from above
Blossom Bar on Rogue River in southern Oregon
Blossom Bar on Rogue River in southern Oregon
Blossom Bar on Rogue River in southern Oregon
Brewer's Sparrow Close Up
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 Back
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.
Brewer's Sparrow Wing
Brewer's sparrow (Spizella breweri) wing spread close up.
Brewer's sparrow (Spizella breweri) wing spread close up.
Brewer's Sparrow Nest
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.
Brewer's Sparrow Nest
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.
Aspen Regeneration
Aspen regeneration after stand-replacing fire in a seral aspen-conifer stand
Aspen regeneration after stand-replacing fire in a seral aspen-conifer stand