Group of five people standing in field, birding.

Birding for All

Connect with us to study, conserve, and enjoy Colorado birds. Colorado Field Ornithologists and birding are for people of all ages and types. Become a part of a statewide community.

Be Part of CFO!

Join or Renew your membership. Give the gift of CFO membership. Become an active member today.

Protecting Colorado Birds

The Conejos River is the largest tributary to the Rio Grande in Colorado, both of which originate in the San Luis Valley. The Conejos system supports agricultural production, outdoor recreation, and wildlife habitat, including for the Western Yellow-billed Cuckoo and the Southeast Willow Flycatcher.

Supporting Science

Colorado Bird Records Committee, a repository for information regarding the records of rare or unusual birds in Colorado.

Colorado Birding Challenge 2025

September 6, 2025

The Colorado Birding Challenge is a fun, county-based birding and conservation event held during the most exciting time of the birding year -- migration season.

Opportunities for Everyone

CFO hosts events and provides education throughout the year for all types of interests. Take your choice of webinars, ID workshops, field trips, competitive birding events, conventions, and more.

Attend Events

Become a member

CFO members receive the outstanding quarterly journal Colorado Birds. Members may register before others for events with limited capacity and often enjoy discounted prices.

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Improve your skills

CFO provides online and in-person resources for you to become a better birder.

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Giving

CFO provides various opportunities for giving to help conserve Colorado's birds and to help support our programs. You can make a difference.

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Upcoming
Events

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Sat
06

Colorado Birding Challenge 2025

Sep 06, 2025 ALL DAY

County of Your Choice In Colorado

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Latest CFO News

Anhinga found at Boulder pond draws 100s of birders

Jun 27, 2025

The Anhinga discovered June 2 on a pond near Boulder Creek has quickly become a Colorado ...
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CFO 2025 Lifetime Achievement Award to Nic Korte

Jun 8, 2025

CFO recognizes persons of character who have gained the respect of birders in their community through ...
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North American Breeding Bird Survey – Get Involved in Colorado!

Feb 23, 2025

David SuddjianBreeding Bird Survey Colorado State Coordinator It’s about half an hour before sunrise, as you ...
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Testimonials

"This was an amazing trip, I learned so much. A big thank you to Nick and Chris for leading and everybody who organized the trip. Well done, what a beautiful day."

Dana Hiatt

Wild Gull Chase Field Trip Participant

"Colorado Birding Challenge was an incredible experience for our family. I'm grateful for CFO helping keep our kids engaged with worthwhile and beautiful things!"

Eryn Lynum

Larimer County, Colorado

Our Impact

"CFO's generous gift is making a significant impact for the conservation of grassland birds. It's enabling the installation of a permanent Motus station that will track birds as they migrate across the Great Plains. CFO funding is restoring 346 acres of key habitat that benefits wintering birds in Chihuahua.

Tammy VerCauteren

Executive Director

Bird Conservancy of the Rockies

Degraded grasslands in Chihuahua, Mexico in 2018. This is poor habitat for overwintering grassland birds. Photo courtesy of Bird Conservancy of the Rockies.

Restored grasslands in Chihuahua, MX in 2019 after newly seeded grasses and forbes have emerged. Photo courtesy of Bird Conservancy of the Rockies.