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2007 | Publisher: USGS | Format: URL
pubs.usgs.gov — The Southwestern Willow Flycatcher (Empidonax traillii extimus) is an endangered bird that breeds only in dense riparian habitats in six southwestern states (southern California, extreme southern Nevada, southern Utah, southwestern Colorado, Arizona, and New Mexico). This report synthesizes information on all known Southwestern Willow Flycatcher More...
Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: URL
www.werc.usgs.gov — International Pintail females are tracked in the spring using satellite telemetry in the Central Valley of California. A team of waterfowl biologists with the USGS Western Ecological Research Center, Ducks Unlimited's Institute for Wetland and Waterfowl Research, and the California Waterfowl Association have received private grants from the More...
Publisher: USGS | Science Center: Forest and Rangeland Ecosystem Science Center (FRESC, Corvallis) | Format: URL
fresc.usgs.gov — Spotted owls are mostly non-migratory, long-lived birds whose populations have declined in mature forests of western North America. They are classified as three subspecies: California, northern, and Mexican. Northern and Mexican spotted owls are listed as threatened under the U.S. Endangered Species Act, and California spotted owls are not. In More...
Publisher: USGS | Science Center: Forest and Rangeland Ecosystem Science Center (FRESC, Corvallis) | Format: URL
sagemap.wr.usgs.gov — SAGEMAP - Spatial Data for Sage Grouse and Shrubsteppe Systems is needed for research and management of sage grouse and sagebrush steppe habitats in the western United States. This website is a product of the NBII Great Basin Information Project. Find out more from this resource on sage grouse as endangered species, habitat information, More...
Publisher: California Information Node | Format: URL
cain.nbii.gov — The California Information Node provides access to data and information about California's environment. Among the topics covered are: invasive species, resource management, conservation, restoration, plants, animals, watersheds and policies. Images, maps and spatial data are also provided. Links to biological issues, biological disciplines, More...
Publisher: USGS | Science Center: Forest and Rangeland Ecosystem Science Center (FRESC, Corvallis) | Format: URL
srfs.wr.usgs.gov — The International Shorebird Survey (ISS) in the eastern and central United States and the Maritimes Shorebird Survey in southeastern Canada have been conducted for more than 20 years and provide a wealth of information about how to survey shorebirds in these areas through both national and regional monitoring programs. Enormous progress has been More...
Publisher: USGS | Science Center: Forest and Rangeland Ecosystem Science Center (FRESC, Corvallis) | Format: URL
srfs.wr.usgs.gov — The Bald Eagle Census, served up by the US Geological Survey and coordinated by the 2007 Midwinter Bald Eagle Survey, counted bald eagle populations in 37 States. The survey is a unique source of long-term data on bald eagles and provides an opportunity to monitor changes or threats to habitat at important wintering areas. Users have access to More...
Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: URL
www.werc.usgs.gov — Migration of Surf Scoters along the Pacific Coast site studies surf scoters, a sea duck, that winter in the San Francisco Bay. Sea ducks are investigated because of evidence indicating widespread population declines in this group. This USGS issue overview studies the ecology of wintering populations and their contaminant risks, including More...
U.S. Department of the Interior |
U.S. Geological Survey