At the annual Christmas Bird Count, birdwatchers brave cold temperatures and all weather conditions to survey birds in a designated “count circle” on a given day. A count’s survey area stays the same from year to year, comprising a circle fifteen miles in diameter around a central point. International in scope, the Christmas Bird Count is organized and compiled by the National Audubon Society, who coordinates all count circles so they don’t overlap.

National Audubon Website - for all states except New Hampshire

NH Audubon Website - - for NH Count, coordinated by NH Audubon