WASHINGTON, DC - DECEMBER 15: A Northern Cardinal is seen during the Christmas Bird Count at Battery Kemble Park on Saturday, December 15, 2018, in Washington, D.C. The Christmas Bird Count is one of the longest-running wildlife censuses in the world where each individual count takes place in a 15-mile-wide circle and is led by a compiler responsible for organizing volunteers and submitting observations to Audubon. (Photo by Salwan Georges/The Washington Post via Getty Images)
Each winter, ornithologists and amateur birdwatchers come together to participate in the National Audubon Society’s Christmas Bird Count (CBC), a holiday tradition with a purpose. The count, which started on Christmas Day in 1900, is the longest-running citizen science project in North America, per Birds Canada, and involves thousands of volunteers stationed at more than […]