Please cite this Page as:

Most Recent Update: 20 May 2003.

Technical notes:
(1) This version of the BBS website is the archived 1966 - 2002 analysis. Some interactive portions of the program are no longer supported, and may not be fully operational. (2) This site has been reviewed by Patuxent staff and others, but remember the disclaimer! Please let us know about errors or other issues that limit the use and value of this site.
(3) There are probably a few species naming issues that lead to empty result pages.
(4) Some 1966 - 1996 analyses (e.g., distribution maps) have been retained here, but most of the trend results from earlier analyses have been moved to archives.
(5) Some species are grouped for analysis. These are indicated on the selection lists.
(6) Earlier versions of the web site have been archived, and are accessible via links.

General Information Read this First: Data Disclaimer! Introduction About the BBS Help Index A Note on Taxonomy Why are Some Species Grouped? Archived 1966-1996 Results Archived 1966-1998 Results Archived 1966-1999 Results Archived 1966-2000 Results Archived 1966-2001 Results Metadata for Analysis Website Survey Results Summary information on population change by region and time period This program allows you to display trends for 3 time intervals, by species. Indices are provided as links from the species names This program allows you to display trends for 3 time intervals, by region. Indices are provided as links from the region names These are relative abundance maps, estimated over the interval 1982-1996. These are maps of population change, based on the 1966-1996 interval. This link takes you to the population change analysis results for bird conservation regions. Interactive Checklists This program allows you to estimate mean abundance from BBS data for any species, at any location in the survey area. (This now includes Alaska!)

Analytical Tools This program provides access to all information, for any species, on any BBS route. (Now updated for 2002) This program allows you to estimate population change for any species and time interval (1966 - 2002), in any region covered by the BBS This program is for estimation of species richness from BBS data using capture-recapture based estimation procedures. Learning Tools This link transfers you to the Bird Identification InfoCenter, in which is contained pictures, songs, and identification tips of most North American Bird Species. Test your skills of identifying North American bird songs, pictures, and breeding and wintering distributions. Visit the USGS Patuxent Wildlife Research Center Web Site For More Information Visit the Breeding Bird Survey Operations Web Site Viewer Response Line: Tell us What you Think!