Summer Range

Winter Range

BBS

Breeding Bird Survey. This survey is typically performed in June by volunteers on over 4000 bird counts. The counts are done by vehicle during the morning. Many nocturnal or less vocal species are not well surveyed by the BBS. Data from this survey is used to generate the BBS maps.

CBC

Christmas Bird Count. This survey is performed in one calendar day any time from mid-December to early January by volunteers. Birds are counted in an area with a 15 mile radius. Data from this survey is used to generate the CBC maps.