Sauer, J. R., J. E. Hines, and J. Fallon. 2008.
The North American Breeding Bird Survey, Results and Analysis 1966 - 2007.
Version 5.15.2008. (Archived)
USGS Eastern Ecological Science Center, Laurel, MD
Most Recent Update: 15 May 2008.
Technical notes:
This is an archived version of the 1966 - 2007 analysis. Remember the disclaimer! We no longer support the interactive analysis programs linked to this website, and they may not be fully operational.
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 2007 data. Older versions are still available, so please note the time periods covered by each set of maps.
Some species are grouped for analysis. These are indicated on the selection lists.
Data for annual index graphs are now listed below the graphics in the regional and species-specific trend results.
Credibility codes for trend estimates updated on 6/03/2005 in response to user comments.
Earlier versions of the web site have been archived, and are accessible via links.
Trend results are now highlighted to indicate significant population declines or increases.
Although these data have been processed successfully on a
computer system at the United States Geological Survey (USGS), no warranty
expressed or implied is made regarding the accuracy or utility of
the data on any other system or for general or scientific purposes,
nor shall the act of distribution constitute any such warranty.
This disclaimer applies both to individual use of the data and
aggregate use with other data. It is strongly recommended that
these data are directly acquired from a USGS
server, and not indirectly through other sources which may have
changed the data in some way. It is also strongly recommended that
careful attention be paid to the contents of the metadata file
associated with these data. The USGS shall
not be held liable for improper or incorrect use of the data
described and/or contained herein.
So, these data are provided as is and without
any express or implied warranties, including, without limitation,
the implied
warranties of merchantability and fitness for a particular purpose.
Also, use of trade names or commercial
products in this home page is solely for the purpose of providing
specific information,
and does not imply recommendation or endorsement by the U.S.
Government.
