Please cite this Page as:

Most Recent Update: 16 April 2012.

This website presents population change information for more than 400 species of North American birds, as estimated from the North American Breeding Bird Survey. Estimates of trend (interval-specific estimates of population change), annual indices of abundance, and maps of abundance and population change for these species are presented for a variety of regions.

Please Note:

This website contains the first public copy of 1966 - 2010 BBS analysis results. We welcome comments on the results presented here. Public review and feedback of the results are a critical part of the scientific review of the website, and we thank you in advance for taking a careful look at these summaries.

Note that some of the bird species names we use out-of-date; we are in the process of updating taxonomy to correspond to the most recent AOU Checklist Update .

And, of course, the usual disclaimer is also valid.

General Information Read this First: Data Disclaimer! Introduction About the BBS Help Index Archived 1966-2007 Results Archived 1966-2008 Results (Comparative Route-regression/hierarchical model Analysis Archived 1966-2009 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 2 time intervals, by species. Indices are provided as links from the species names This program allows you to display trends for 2 time intervals, by region. Indices are provided as links from the region names These are relative abundance maps, estimated over the interval 2006-2010. These are maps of population change, based on the 1966-2010 interval.

Analytical Tools This program provides access to all information, for any species, on any BBS route. (Updated to 2010) New:For US routes, we provide summary information on remotely-sensed habitat data. This program allows you to estimate population change for any species and time interval (1966 - 2010), in any region covered by the BBS This program is for estimation of species richness from BBS data using capture-recapture based estimation procedures. This link leads to a website that allows users to download GIS data for the BBS. 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. For More Information Visit the Breeding Bird Survey Operations Web Site Viewer Response Line: Tell us What you Think!