Christmas Bird Count at La Reseda reservoir in Triángulo del puma, Colombia. Photo: Luis Bernardo Cano

Audubon Christmas Bird Count

A hemispheric community science program with a century of history behind it.

More than a century of your data powers our science.

The nation's longest-running community science bird project fuels Audubon's work throughout the year. The Christmas Bird Count occurs December 14 to January 5 every season. Sign up to receive information and results about all of Audubon's community science programs through American Birds, our email newsletter.

Christmas Bird Count Links

Join the Christmas Bird Count Access Count Results See 100 Years of Data Enter Your CBC Data American Birds Sign Up Compiler Resources

Christmas Bird Count organized by Birdability at Stonington in Connecticut. Photo: Mike Fernandez/Audubon

Join the Christmas Bird Count

You can add to a century of community science by signing up for a count near you.

Find Out More

Christmas Bird Count Compiler Resources

Christmas Bird Count Compiler Resources

Everything you need to know to run your Christmas Bird Count circle

Summary of the 124th Christmas Bird Count, 2023-2024

Summary of the 124th Christmas Bird Count, 2023-2024

A collection of reports and summaries of the 124th CBC, December 14, 2023 to January 5, 2024

Where Have All The Birds Gone?

Where Have All The Birds Gone?

Track how your favorite birds have fared over decades with our CBC trends viewer.

Christmas Bird Count Bibliography

Christmas Bird Count Bibliography

Hundreds of studies by scientists around the world have put CBC data to use

History of the Christmas Bird Count

How the count started, and how the data is used today.

Annual Summaries of the Christmas Bird Count, 1901-Present

3935 The annual summary of the Christmas Bird Count has been published in a variety of forms since the count's inception in 1900. Until the 112th...