Christmas Bird Count

Audubon CBC
Each year in late December, more than 50,000 birders across North America participate in Audubon's annual Christmas Bird Count, the world's longest-running database in ornithology. First conducted in 1900, the Christmas Bird Count is a day long census of bird populations. Each local count occurs within a 15-mile diameter circle. Participants count all the birds they can find within the circle in a 24-hour period. 

You don't need to be an expert to participate, and you don't have to count for the entire day. Even if you can participate for only a few hours, your contribution is welcome and important. 

In any given year, there are about 50 Christmas Bird Counts in Washington, ranging from the mouth of the Columbia River to Colville, and from Pullman to Bellingham.

The results of National Audubon's Christmas Bird Count represent more than 100 years of continuous data on trends of early-winter bird populations across the Americas. These data - records of nearly 70,000 individual Christmas Bird Counts from Dec. 25, 1900 through today - are now on-line, available for ready access and analysis. See for yourself the local, regional, and continental trends of various species.

Since 2007, CBC for Kids focused on ages 8-16!

2014 marks the 115th Annual Audubon Christmas Bird Count!

The Christmas Bird Count is a free and priceless event. However, donations are appreciated to sustainin this grand effort and to keep the CBCs free in the future. Please consider making a donation to the world's longest running citizen science program.


Copyright  2015 National Audubon Society, Inc