With 2015 marking its 50th anniversary, the BBS continues to provide critical science-based estimates of population change on more than 600 continental bird species annually to improve our understanding of how these federally entrusted species respond to environmental variation and ecosystem change.
The BBS is managed by USGS in partnership with the Canadian Wildlife Service and Mexican National Commission for the Knowledge and Use of Biodiversity, and relies on trained volunteer observers, or “citizen scientists,” to collect bird-count data in a statistically robust national sample framework.
BBS data have already contributed to hundreds of peer-reviewed publications, and are critical to inform wildlife managers of significant changes in bird population levels.
Top Photo: Least tern chick at Rachel Carson National Wildlife Refuge. Photo courtesy of Brian Rudinsky, U.S. Fish and Wildlife Service.