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November 2007 | Publisher: USGS | Format: .PDF
biology.usgs.gov — The greater sage-grouse (Centrocercus urophasianus) and the Gunnison sage-grouse (C. minimus) are species of concern because of their population declines and shrinking geographic distributions. Of continuing interest is the question of population abundance and trends. This publication answers the questions that deal with sage-grouse population, More...
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...
2001 | Publisher: USGS | Science Center: Upper Midwest Environmental Sciences Center (UMESC, LaCrosse) | Format: URL
www.umesc.usgs.gov — Research at the Upper Midwest Environmental Center, which gathered detailed observations on tree swallow nesting success and contaminant concentrations in 1998-2000, to guide EPA and the U.S. Fish and Wildlife Service in effectively managing the risk of chemical contaminants to wildlife and the environment.
1998 | Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL
www.mbr-pwrc.usgs.gov — Patuxent Bird Identification InfoCenter provides photographs, songs, videos, identification tips, maps, and life history information such as migration status, breeding, nesting type, and diet for North American birds. This website presents photographs, songs, videos, identification tips, maps, and life history information for North American More...
Publisher: USGS | Science Center: Columbia Environmental Research Center (CERC, Columbia) | Format: URL
www.cerc.usgs.gov — The BFRS works cooperatively with team members from CERC and with faculty and graduate students of Department of Wildlife and Fisheries Sciences at Texas A&M University in research areas represented by the branch structure of the CERC including toxicology, ecology, biochemistry and physiology, environmental chemistry, ecogeography, and information More...
Publisher: USGS | Science Center: Western Ecological Research Center (WERC, Sacramento) | Format: .PDF
www.werc.usgs.gov — One cause for declines in desert tortoise populations is predation on juveniles by common ravens (Corvus corax), a predatory bird species native to the Mojave Desert. The Recovery Plan for the Desert Tortoise recommended that research be conducted on sources of mortality (including natural predation). This study was implemented to investigate the 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 — Conservation Genetics of Shorebirds uses molecular techniques to describe genetic structure and diversity in North American shorebirds (order: Charadriiformes) to facilitate population maintenance and recovery of these migratory birds.
Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL
www.mbr-pwrc.usgs.gov — Procedures for collection, analysis, and display of data collected at several geographic scales for migratory bird research at the Patuxent Wildlife Research Center is designed to provide regional estimates of relative abundance for mapping and other uses. This website links to a specific protocol for conducting bird counts, as well as color maps More...
Publisher: Other (Bird Studies Canada) | Format: URL
www.bsc-eoc.org — The North American Bird Monitoring Projects Database site is dedicated to bird monitoring in North America. It provides easy access to descriptions of all major bird monitoring projects in Canada, the United States, and Mexico. The information will be used in designing new continental projects to insure that existing efforts are used to the More...
Publisher: Other (Bird Studies Canada (Etudes d'Oiseaux Canada)) | Format: URL
www.bsc-eoc.org — The Canadian Migration Monitoring Network has 21 monitoring stations across Canada where migrating birds are tracked from the Atlantic to the Pacific. This website aids in providing much needed baseline data on population trends of northern breeding birds by developing standards for data collection, preparing computer software to aid with data More...
Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL
www.pwrc.usgs.gov — Breeding Bird Survey (BBS) is a project monitored by the USGS and the Canadian Wildlife Service on the status and trends of North American bird populations. The data can be used to estimate population trends and relative abundances at various scales. The BBS is a cooperative effort between the U.S. Geological Survey's Patuxent Wildlife Research More...
U.S. Department of the Interior |
U.S. Geological Survey