10 Favorite Colorado Birding Resources

There are many excellent resources for learning about Colorado’s great birding opportunities. Here is a list of 10 of my personal favorites. I don’t intend this to be an exhaustive list–just a sampling of the books and online resources I use most often. And I would be remiss if I didn’t mention all the knowledgeable and friendly Colorado birders who have welcomed me and willingly shared their time and expertise.  Thank you all!

Books on Colorado Birding

One: Birding Colorado: Where, How, and When to Spot Birds across the State by Hugh Kingery. Newly revised in 2023, this 312 page guide is part of the excellent Falcon Guides series. It includes detailed maps and suggestions on how to bird the top sites throughout Colorado plus a summary of exactly where and when to find the specialty species. Whether you live in Colorado or are planning a birding trip, this is an essential guide.

Two:  A Birder’s Guide to Colorado (ABA/Lane Birdfinding Guide) by Harold Holt.  This classic is no longer in print but the most recent edition from 1997 is widely available from used booksellers.  Almost 400 pages and crammed full of maps, detailed itineraries, bird-finding strategies, and more, this is another essential resource for any Colorado birder.  

Three: Yet another older but fascinating resource is Birdfinder: A Birder’s Guide to Planning North American Trips by Jerry Cooper.  Also out of print but available from used booksellers, this book is intended by Cooper as a description of 19 separate birding trips that can be taken in the United States that would “provide the traveling birder a chance to see the 650-odd listed species.”  In addition to his suggested itineraries (complete with maps, when to visit, list of target species), Cooper describes 13 additional birding destinations that will fill in species not typically found on his longer itineraries.   Of interest to Colorado birders,  two of Cooper’s suggested trips include “Early Spring in Colorado” (a 5 day April itinerary) and “Summer in Colorado” (a 6 day itinerary in late June.)

FOUR: There are many excellent identification field guides applicable to Colorado but the newest one is a real delight. Field Guide to Birds of Colorado is part of the American Birding Association’s field guide series.  Written by Colorado birder, Ted Floyd, with terrific photos by Brian Small, this pocket size guide is probably most suitable for beginning and intermediate birders but the writing is so delightful that it’s just plain fun for anyone.  For example, here is what Ted says about the Colorado state bird, Lark Bunting:

“Neither a lark nor a bunting, the state bird of Colorado is actually “just” a sparrow.  But, what a sparrow!  Lark Buntings occur mainly east of I-25, and, in places, they can be downright abundant.  The song, given in flight, is a chanting series of trills and stutters, notably low-pitched for a sparrow.”

FIVE: I always keep a copy of the DeLorme Colorado Atlas and Gazetteer in my car.  These maps cover the entire state, offer great detail, and clearly mark nearly all of the public land which covers includes all the birding hotspots mentioned in the books above.  This is extra helpful since there are many places where you won’t get cell phone service and can’t just look up your location on your phone.

Online Resources for Colorado Birding

SIX: Colorado Field Ornithologists (CFO) maintains a comprehensive page of online birding resources. Here you’ll find links to the bird clubs and Audubon groups in Colorado, various Colorado birding sites, and much more.  My favorite reference is probably the amazing Colorado County Birding site which truly does list the best birding spots in each of Colorado’s 64 counties. The amount of time it has taken to compile all this info is astounding and it’s a wonderful help to any local or visiting birder.

SEVEN: One important site I check nearly every day is COBIRDS.  This is a Google Group (essentially a listserv) with reports on the latest bird sightings plus comments and questions submitted by users.  You can visit and read the site or join the group to submit your own reports and receive emails when news is posted.

EIGHT:  For Facebook users, you will want to check out the Colorado Field Ornithologists page and Denver Field Ornithologists (DFO.)  Both are good places to learn, ask questions, and get connected with other birders.  In addition to the free online information, both CFO and DFO are membership organizations that you can join for even more benefits.

NINE: eBird has been invaluable in helping me plan trips and find birds in Colorado.   Their Hotspot Explorer and Explore a Region functions maps the best birding spots and the Bar Chart function can be customized to show which species can be expected at each location for any month of the year and even includes a link to view specific recent reports for each species.  It’s a great tool and here is a summary of these functions.

TEN: The Colorado Birding Trail is a compilation and description of over 800 birding sites across Colorado.  The sites are organized into 54 different “trails” and each site is described in details with maps, directions, tips, and a list of likely birds.

BONUS:  I’ve recently stumbled across Rocky Mountain Birds: Birds and Birding in the Central and Northern Rockies  by Paul A. Johnsgard.  This 274 page book was published in 2011 and is available as a FREE download from DigitalCommons@University of Nebraska – Lincoln.  (I know…FREE DOWNLOAD often sounds like a gimmick but this really is available as a full download of the entire book.)  Johnsgard begins with a clear and thorough account of  the habitats, ecology and bird geography in the Rocky Mountains followed by descriptions of all the major birding hotspots and a complete set of species accounts with tips on locating each species.  I plan to spend more time with this resource.