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: 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...