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1995 | Publisher: USGS | Science Center: Fort Collins Science Center (FORT, Ft. Collins) | Format: URL
www.fort.usgs.gov — This chapter is a part of a larger volume report called Our Living Resources: A report to the nation on the distribution, abundance, and health of U.S. plants, animals, and ecosystems. This chapter deals with non-native species - more specifically, the brown tree snake (Boiga irregularis), as an invasive species and its effects on native birds 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...
Publisher: USGS | Science Center: Fort Collins Science Center (FORT, Ft. Collins) | Format: URL
www.fort.usgs.gov — This publication is intended to provide a summary of long-range surveillance radar technology and applications of these data to questions about movement patterns of birds and other flying wildlife based on publications that provide more detailed information (Buurma, 1995; Gauthreaux and Belser, 2003a, b; Gauthreaux and others, 2003; Diehl and More...
2008 | Publisher: USGS | Science Center: Fort Collins Science Center (FORT, Ft. Collins) | Format: URL
www.fort.usgs.gov — San Acacia Dam is located in a reach of the Rio Grande that has been designated as critical habitat for two endangered species, the Rio Grande silvery minnow (Hybognathus amarus) and the southwestern willow flycatcher (Empidonax traillii extimus). Presently, Rio Grande upstream from the dam is used to convey irrigation water to the Socorro main 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.
Publisher: USGS | Science Center: Upper Midwest Environmental Sciences Center (UMESC, LaCrosse) | Format: URL
www.umesc.usgs.gov — This web resource is a tool for mapping and modeling migratory birds for bird conservation planning. The focus of this study is to develop statistically sound, science-based models to support public land management for high priority bird species within a regional context. The site links to a Project Description, Modeling Avian Abundance, Desktop 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: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL
www.mbr-pwrc.usgs.gov — This website is a tool useful for learning about birds. Users can learn about common United States and Canadian Birds through pictures, songs, and using identification tips. The site also links to Central American Birds, with Songs and Photographs of Selected Species that Breed in Central America. Users may also access a frames-based bird More...
Publisher: USGS | Science Center: Fort Collins Science Center (FORT, Ft. Collins) | Format: URL
www.fort.usgs.gov — The Arizona Grasshopper Sparrow (Ammodramus savannarum ammolegus) breeds in desert grasslands of southeastern Arizona and southwestern New Mexico in the US, and in adjacent parts of northern Sonora and Chihuahua, Mexico. Roads that were surveyed in 1982 and 1987 in Arizona and New Mexico were relocated and roadside survey protocols were repeated More...
Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL
www.pwrc.usgs.gov — The North American Bird Phenology Program houses a unique and largely forgotten collection of six million Migration Observer Cards that illuminate migration patterns and population status of birds in North America. These handwritten cards contain almost all of what was known of bird status from the Second World War back to the later part of the More...
Publisher: USGS | Science Center: Patuxent Wildlife Research Center (PWRC, Laurel) | Format: URL
www.mbr-pwrc.usgs.gov — Scientists present photographs, songs, videos, identification tips, maps, and life history information for North American birds on the Patuxent Bird Identification InfoCenter website.
Publisher: Academic Institution (University of California-Davis) | Format: URL
tricolor.ice.ucdavis.edu — This website provides information on the tricolored blackbird (Agelaius tricolor), a near-endemic California passerine and the most colonial songbird in North America. The site is being developed with content appropriate for the largest audience, with basic natural history and conservation information, access to reports, images and videos, links More...
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U.S. Geological Survey