Latest update: 22 May 2011

Mini Breeding Bird Surveys

Orange, Chatham, and Durham Counties

North Carolina

A Mini Breeding Bird Survey (MBBS) is a small-scale version of the full Breeding Bird Survey organized each year by the U.S. Fish and Wildlife Service throughout North America.

An MBBS focuses on one county.   Volunteers count birds seen or heard along randomly chosen routes on secondary roads.   The objective is to determine the distribution of breeding birds in the county and to assess any year-to-year changes in their numbers.

An annual MBBS began in Orange County (12 routes) in 1999, in Chatham County (14 routes) in 2000, and in Durham County (8 routes) in 2002.   The number of routes in each county varies with the size of the county.

The first decade of MBBS (1999-2009)

2009 was the eleventh consecutive year for Orange County,
tenth for Chatham, and the eighth for Durham County.

During this period we covered all routes in these three counties almost annually.
See the annual reports below for details.

Special thanks to our county coordinators for this decade ...

Ginger Travis Orange County)
Marsha Tuttle (Chatham County), and
Patsy Bailey (Durham County)

... and to all participants -- all 38 of them for 2009!

Our results for 1999-2009. . .

Orange County -- 1999   2000   2001   2002   2003   2004   2005   2006   2007   2008   2009
Compare years!

Chatham County -- 2000   2001   2002   2003   2004   2005   2006   2007   2008   2009
Compare years!

Durham County -- 2002   2003   2004   2005   2006   2007   2008   2009
Compare years!

some analysis of trends in populations of birds during this decade More information about ...

our procedures
(revised May 2006, updated September 2009)

including

descriptions and maps of our routes

a list of birds breeding in our area

printable forms for MBBS data

If you have questions, please contact Haven Wiley !