Photo by Bill Thompson, III

Christmas Bird Counting

A long-standing program sponsored by the National Audubon Society, the Christmas Bird Count takes place each winter from December 14 to January 5 in designated 15-mile (24-km) circles across North America. Each circle count is conducted in one day. Thousands of bird watchers participate in this annual bird census, contributing data that is invaluable to assessing North American bird populations and guiding conservation action.
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Photo by Bill Thompson, III

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