Audubon Christmas Bird Count

The nation's longest-running community science bird project fuels Audubon's work throughout the year.

Christmas Bird Count

Join the Christmas Bird Count

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

Christmas Bird Count

Christmas Bird Count Compiler Resources

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

Summary of the 121st Christmas Bird Count 2020-2021

A collection of reports and summaries

Christmas Bird Count

Where Have All The Birds Gone?

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

CBC_Bibliography_Camilla_Cerea

Christmas Bird Count Bibliography

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

Christmas Bird Count

History of the Christmas Bird Count

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

Sandhill Cranes. Lynne Kasey/Audubon Photography Awards

Annual Summaries of the Christmas Bird Count, 1901-Present

Peruse the printed records of past Christmas Bird Count or find a full bibliography for American Birds and Bird Lore.

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