Regional Birds
This guide to birds of Boulder County, Colorado features beautiful photos of every bird species likely to be seen in Boulder County.
If you’d also like a printable checklist, download the Boulder County Checklist from the Colorado Field Ornithologists (2013 version; PDF).
Quick Links to Groups
Gerhard Assenmacher, Stephen Jones, and Amy Schlotthauer worked together to make this online field guide possible. Stephen Jones collated all the status, population, and conservation information for each bird. A list of all the photographic contributors is at the end of this page.
The distribution and status of birds in Boulder County is ever-changing. If you find incorrect information or would like to contribute additional information or images to this guide, please contact us.
The expanded version of each image bears a copyright notice, photographer’s name, and information about each species. Please respect these specific copyrights if you choose to use them elsewhere.
Swans, Geese and Ducks
Pheasants and Grouse
Loons and Grebes
Bittern, Herons, Ibis
Vultures, Hawks, Eagles and Falcons
Rails, Coot and Crane
Shorebirds
Gulls and Terns
Pigeons and Doves
Owls
Nighthawk, Swifts, Hummingbirds and Kingfisher
Woodpeckers
Shrikes, Flycatchers and Vireos
Corvids
Lark and Swallows
Chickadees, Nuthatches and Creeper
Wrens, Gnatcatcher, Kinglets and Dipper
Thrushes
Starling, Pipit, Waxwings
Warblers
Towhees and Sparrows
Tanager, Grosbeaks, Bunting, Blackbirds
Finches and Weaver Finch
The Boulder County Audubon Society greatly appreciates the images donated below. This page extensively features the photographs of Gerhard Assenmacher. Most are Gerhard’s photos, but he wants to acknowledge the following photographers who also contributed to this project:
Kevin Smith
Matthew Studebaker
Tom Wiberding
Don Whittaker