Access to online data entry for the second Maryland/D.C. Breeding Bird Atlas (2002-2006) has been closed, and the data are now published.
Requests for data should be sent to the Project Coordinator, Walter Ellison, at: rossgull@baybroadband.net.
Data are presented here by agreement among the atlas project, NBII, and USGS Patuxent Wildlife Research Center.
The resulting publication for this project is:
Ellison, W.G. 2010. Second Atlas of the Breeding Birds of Maryland and the District of Columbia. Baltimore, MD: The Johns Hopkins University Press. 520 pages.
Results should be
cited as:
Breeding
Bird Atlas Explorer (online resource). 2025. U.S. Geological Survey
Patuxent Wildlife Research Center. <Date of access>. http://www.pwrc.usgs.gov/bba.
Data compiled from: Maryland and the District of Columbia Breeding Bird Atlas 2002-2006. Maryland Ornithological Society. Results used with permission.
Use Policy
The data presented herein may be used by anyone for educational purposes. However, if the data are to be reproduced as part of a research project or other publication, including on the internet, the Maryland and D.C. Breeding Bird Atlas must be attributed to the Maryland Ornithological Society (M.O.S.). The M.O.S. desires notification about publications making use of their data. These data are not to be used for commercial purposes including resale except by the M.O.S. and their publisher(s). Atlas data are subject to biases that limit their exhaustiveness, and until completion of data entry in 2006 do not constitute a complete set. Nonetheless, these data provide a valuable source of information on the nesting birds of Maryland and the District of Columbia.
Sponsors
Sponsorship and coordination for this project was provided by the Maryland Ornithological Society and the Maryland Department of Natural Resources.
First atlas: Maryland & DC 1983-1987
The currently displayed project is a second breeding
bird atlas. For information about the first atlas, see
Maryland & DC 1983-1987.
