print email comment close North American Breeding Bird Survey (BBS) URL: http://www.pwrc.usgs.gov/bbs/ Description: "A long-term, large-scale, international avian monitoring program initiated ... to track the status and trends of North American bird populations. ... Following a rigorous protocol, BBS data are collected by thousands of dedicated participants along thousands of randomly established roadside routes throughout the continent." Coordinated by the Patuxent Wildlife Research Center of the U.S. Geological Survey (USGS) and the National Wildlife Research Center of the Canadian Wildlife Service. Author: Pardieck, Keith Publisher: USGS Patuxent Wildlife Research Center Library of Congress Subject Headings: Bird populations -- North America Bird watching Birds LII Database Information: Record 4895 created by Carole Leita on 09/23/1999 Last modification on 06/25/2005 Published: 09/23/1999   Funding agency: California State Library LII Item ID: http://lii.org/cs/lii/view/item/4895