USGS PWRC web-site link USGS web-site link
The North American Breeding Bird Survey Results and Analysis 1966-2004
Dedicated to Chandler S. Robbins, originator of the survey, to honor his 50 years of government service

Please cite this Page as:

Sauer, J. R., J. E. Hines, and J. Fallon. 2005. The North American Breeding Bird Survey, Results and Analysis 1966 - 2004. Version 2005.2.(Archived) USGS Patuxent Wildlife Research Center, Laurel, MD



Most Recent Update: 3 June 2005.

Technical notes:
(1) This is an archived version of the 1966 - 2004 analysis. Remember the disclaimer! The interactive trend programs of the website are no longer supported, and may not be fully operational.
(2) There are probably a few species naming issues that lead to empty result pages.
(3) Maps (e.g., distribution maps) have not yet been updated with 2004 data. Older versions are still available, so please note the time periods covered by each set of maps.
(4) Some species are grouped for analysis. These are indicated on the selection lists.
(5) New addition on 27 May 2005: Data for annual index graphs are now listed below the graphics in the regional and species-specific trend results.
(6) Credibility codes for trend estimates updated on 6/03/2005 in response to user comments.
(7) Earlier versions of the web site have been archived, and are accessible via links.



General Information


Survey Results

Species Groups: Analysis of Change for Species Groups
Summary information on population change by region and time period

Interactive Species Trend and Indices Program
This program allows you to display trends for 3 time intervals, by species. Indices are provided as links from the species names

Interactive Regional Trend and Indices Program
This program allows you to display trends for 3 time intervals, by region. Indices are provided as links from the region names

Abundance Maps-Spatial Patterns of Bird Abundance Red-shaded Version
Abundance Maps-Spatial Patterns of Bird Abundance Blue-shaded Version
These are relative abundance maps, estimated over the interval 1994-2003.

Trend Maps-Spatial Patterns of Bird Population Change
These are maps of population change, based on the 1966-2003 interval.

bcr analysis
This link takes you to the population change analysis results for bird conservation regions.

Interactive Checklists

Relative abundance maps
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

Interactive Route Data Summary
This program provides access to all information, for any species, on any BBS route. (Now updated for 2004) New:For US routes, we now provide summary information on remotely-sensed habitat data.

Interactive Route-regression Trend Analysis
This program allows you to estimate population change for any species and time interval (1966 - 2004), in any region covered by the BBS

Program Comdyn
This program is for estimation of species richness from BBS data using capture-recapture based estimation procedures.


Geographic Information
This link leads to a website that allows users to download GIS data for the BBS.

Learning Tools

Tools for Learning about Birds
This link transfers you to the Bird Identification InfoCenter, in which is contained pictures, songs, and identification tips of most North American Bird Species.

Play the Patuxent Bird Quiz!
Test your skills of identifying North American bird songs, pictures, and breeding and wintering distributions.

The Migratory Bird Research Home Page
Visit the USGS Patuxent Wildlife Research Center Web Site

For More Information

The BBS Operations Home Page
Visit the Breeding Bird Survey Operations Web Site

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