122nd Annual Audubon Christmas Bird Count

Tufted Titmouse. Photo: Michele Black/Great Backyard Bird Count

Save the Date!

ACES invites you to help count birds on Sunday, December 19, 2021 in the Aspen area for the 122nd Audubon Christmas Bird Count (CBC), the longest-running citizen science survey in the world. Birders of all experience levels are welcome and encouraged to participate in this important census that has helped assess the health of bird populations and guided conservation action since 1900. Across the Western Hemisphere, over 50,000 people will be counting birds during local count events, many of them making the adventure of winter birding a seasonal tradition.

The CBC event is free and open to the public. Details around registration and meeting location will come out early December. 

Other ways to participate are:

  • Register your Bird Feeder (check the map to see if your feeder is within the CBC circle),
  • Feeder watching and count-week observations. Contact us for details.

Get into the swing of local winter birding at our Morning Birding outing on Tuesday, December 7 at Hallam Lake. Morning Birding is held on the first Tuesday of each month throughout winter. We hope you will join us!

Photo: Tufted Titmouse by Michele Black/Great Backyard Bird Count from Audubon.org.

What To Bring:

Bring your own binoculars (or borrow ours) and guide book (optional). Be prepared for cool temperatures and walking both on- and off-trail. Please dress in warm layers and sturdy footwear.

How To Get There:

Please walk, bike, bus, carpool, or ski to ACES sites whenever possible (yes, you really could cross country ski to ACES when there is enough snow). Parking at all sites is extremely limited and alternate transportation is fun and saves the planet!




Next Date:

Sunday, December 19 - 7:30am to 3:00pm


  • Adults