2026 Hayward-Fremont Christmas Bird Count
December 20
The Christmas Bird Count has been an annual tradition for 126 years, and is still going strong. Each year, during the period from December 14 through January 5, birders all over the world count birds inside of established 15-mile-diameter circles. Locally, our Hayward-Fremont CBC circle extends from the Pleasanton hills to the San Francisco Bay, from Castro Valley to Mowry Landing. Last year, a great team of almost 100 field counters and feeder watchers detected 179 bird species inside the circle. Teams of counters spread out throughout the area to count birds all day long, then come together at the end for a dinner to report their findings.
This year’s CBC will take place on Sunday, December 20. We’re looking for volunteers to help out counting birds in the field, or from home at your feeders (contact us to find out if your home is inside the circle). If you’d like to help, register below.
We have been successful in years past and need your help to be successful once more. Community science projects like the CBC benefit from broad participation, consistent coverage from our area leaders, and the work of each field and feeder counter.

