The CBC is the world’s largest and longest-running community science data collection project. The 2025-2026 count period from December 14 to January 5 marks the 126th CBC sponsored by the National Audubon Society. It will be Eastside Audubon’s 42nd CBC.

The EAS CBC is an all-volunteer project, and we have three ways for you to participate.

• Our chapter has 15 teams being led by experienced birders who are accepting 3-8 volunteer participants.

• We also support at-home feeder watchers who count birds at their home feeder or other locations within the 25-mile diameter circle centered on Beaver Lake in Sammamish. View our CBC Count Circle here and see if your address falls inside the circle (top left for search field). Register for Feeder Watch Program

• Everyone, whether birding or not, is invited to join the CBC dinner after the count!