Colorado Field Ornithologists

is a nonprofit, volunteer organization devoted to the study, conservation and enjoyment of Colorado’s birds.

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CFO Northeast Colorado Field Trip Feb. 21-23 Summary Now Available!

About CFO

What we are all about

CFO Membership

Your hub for member benefits

Colorado Birds

CFO's quarterly journal

CFO Annual Convention

Colorado's premier birding event

CFO Projects, Grants and Scholarships

Learn about the work you support through your membership

Colorado Birding

Extensive resources for birding in all 64 Colorado counties

Colorado Birding Challenge

A unique county birding competition benefiting conservation

Colorado Bird Records Committee

Documenting rare or unusual bird sightings throughout the state