East Bay Birders Circle was an on-line discussion group dealing with birding in Contra Costa and Alameda Counties in the San Francisco Bay area through July 2004. On August 1, 2004 the EBB Web site was merged with the MDAS Sightings e-mail group. In April 2010, this list was moved to Yahoo Groups, and then in 2019 it migrated to Groups.io. Archives of messages posted before April 2010 can be viewed below.
EBB List Archive: June 1998-July 2004
EBB List Archive: August 2004-March 2010