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Big sagebrush ecosystems are particularly sensitive to wildfires and life history information on big sagebrush is scarce and vital for restoration...

Golden eagles have only been recently studied in Yellowstone National Park and their status is still unknown.

Species distribution models help researchers explore how environmental conditions influence the spatial pattern of species occurrence over large areas...

Amphibian decline is a global conservation crisis driven by multiple interacting stressors, which often act at a local scale with global implications.

USGS researchers are beginning a new technical assistance study to help identify the current distribution of Foothill Yellow-Legged Frogs in Oregon.

Although feathers are commonly used to monitor mercury in birds, their reliability has not been assessed for many avian species, including most...

In 2000, the USGS Amphibian Research and Monitoring Initiative - or ARMI - was established, under the direction of the President and Congress, in...

Climate change is increasing extreme droughts events, posing a threat to freshwater ecosystems, particularly with human demands for diminishing water...

Over the past century barred owls have been expanding their range westward, encroaching into the old-forest habitat of their sister species, the...

The red-cockaded woodpecker is a federally listed species that declined in the southeastern United States from approximately 1.6 million cooperative...