MBR symbol

The North American
Breeding Bird Survey

USGS Patuxent Wildlife Research Center
United States Department of the Interior
Laurel, MD, USA
MBR symbol

Partners in Flight Physiographic Region
Analysis Page


Please cite this Page as:

Sauer, J. R., J. E. Hines, and J. Fallon. 1996. The North American Breeding Bird Survey Home Page: Partners in Flight Analysis. USGS Patuxent Wildlife Research Center, Laurel, MD

Partners in Flight - Companeros en Vuelo

is a cooperative effort to improve monitoring, research, management, and education aimed at the conservation of landbirds. As part of this effort, information from the North American Breeding Bird Survey is used to evaluate regional patterns of bird population change. Modified versions of the physiographic strata used in the BBS were developed by PIF staff and regional working groups in cooperation with Danny Bystrak, Sam Droege, Bruce Peterjohn, and John Sauer. These new strata were then placed in a GIS coverage to allow us to assign the survey routes to the regions and define areas for estimation of population trends

Partners in Flight Physiographic Region
Trend Analysis Results


Here, you can access a summary list of trends for either a species or a region. These results were estimated for physiographic strata developed by regional working groups associated with Partners in Flight.

Simply select the sort of summary you want (by species or region), then select the region (or species) of interest.

The results are based on the Route-regression, estimating equations method.

Please enter type of results requested:

If Species, please enter the species aou code:

If Region, please enter the region of interest:
Want to see a map?

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BRD Data Liability Disclaimer

Although these data have been processed successfully on a computer system at the USGS Biological Resources Division, 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 BRD 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 BRD 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.

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