To identify an unfamiliar bird, focus first on four keys to identification.
Explore how birds are built with Bird Academy’s virtual bird.
How to make a safe, successful home for our feathered friends.
Online Guide To Birds and Bird Watching.
Dedicated to achieving conservation results for birds of the Americas.
Provides leadership to recreational birders by increasing their knowledge, skills, and enjoyment of birding.
Terrific online resource for learning just about everything relate to wild birds.
Conserving birds and their habitats through an integrated approach of science, education and land stewardship.
Need to identify a bird? You can’t go wrong using this website run by the Cornell Lab of Ornithology.
Photographs of 560 species of birds indexed by family.
Need to hone up on your birding ID skills? Your first stop should be at this website run by the Cornell Lab of Ornithology.
Denver Field Ornithologists guide (pdf format) for field trip participants. Easy 20-minute read containing suggestions, good ideas, and the tricks of the trade; everything from choosing the trip that’s right for you to how birding with a group works best for everyone.
One-page summary (pdf file) of the Denver Field Ornithologists' guide for field trip participants.
Transports listeners into the natural world with outstanding audio programming and online content. Their stories are rich in sound, imagery, and information, connecting the ways and needs of birds to the lives of listeners.
If you drink coffee, please consider buying shade grown, organic Bird Friendly® certified coffee with the Smithsonian Migratory Bird Center logo on the bag.
At least one beautiful photograph by Gerhard Assenmacher and other local photographers of every bird species likely to be seen in Boulder County. Clicking on the thumbnail image of any bird will open a larger version of it with a short, but very informative, description.
A photography website with about 1300 images of birds of Colorado, including some being held in a human hand (probably during banding), which may be somewhat useful for judging a bird’s overall size.
Complete listing in taxonomic order of the official state list of birds based on the checklist of Colorado Field Ornithologists. Each bird listed also has a link to its entry on Wikipedia.
A paid subscription service (by month or annually), this online reference by Cornell Lab of Ornithology is the definitive source of life history information for the more than 700 species of birds that breed in Canada and the United States (including Alaska and Hawaii).
A self-guided driving tour map (pdf file) of some of Boulder County’s best areas to view birds of prey, or raptors.
Raptor rehabilitation and community education. Over 14,000 birds helped since 1981.
Listen to brothers David and Scott Menough on BirdTalk every Saturday from noon to 1 pm and find out what's happening in our natural world. David and his wife Kathy are the proprietors of the Wild Birds Unlimited Nature Shop in Arvada and Scott and his wife Sandy are the proprietors of the Wild Birds Unlimited Nature Shop in Denver.
Nearly half of Boulder County is public land, so there are literally hundreds of trails available to birdwatchers, from the plains to the Continental Divide. This webpage lists a few of the Boulder County Audubon Society's favorite birding spots.
A 123-acre model urban wildlife refuge and restored native prairie, wetlands, woodlands and riparian area open sunrise to sunset, every day. Offers free bird walks on the first Saturday of every month, all year long, from 8:00 a.m. until 10:00 a.m. For a checklist (pdf file) of the birds of Bluff Lake Nature Center, click here.
Founded in 1947, the BBC believes that persons who become interested in birds will continue to care for our birding environment and will be the caretakers of our natural resources.
A voice for migratory bird and wildlife conservation through habitat protection, political action, and education.
Nearly half of Boulder County is public land, so there are literally hundreds of trails available to birdwatchers, from the plains to the Continental Divide. This webpage lists some of Boulder County Audubon Society's favorite Boulder County birdwatching places.
Disseminates natural and cultural history information to the public through nature hikes, classes, slide programs, publications, seminars, and support for interpretive facilities in Boulder County.
Establishing legal rights for naturally functioning ecosystems and native species.
Birds shown on this list with names in bold (check marks also precede their names) are birds that have been documented in the City and County of Broomfield – a total of 239 according to this website.
Map and site descriptions put together by the Colorado Birding Society.
Serving the community by protecting, enhancing and promoting the enjoyment of Broomfield’s open space, trails and wildlife.
Photographs, Species Accounts, Checklists and Sighting Reports.
CUBs is a year-round citizen-science project developed and launched by The Cornell Lab of Ornithology. Its primary purpose is to reach diverse urban audiences who do not already participate in science or scientific investigation. Free and bilingual.
Report of uncommon birds found in Colorado and discussions of bird related issues.
The Nature Conservancy's list of top five must-see bird migrations in Colorado.
Colorado Bird News
Colorado rare bird alerts, Colorado bird checklists and Colorado bird sightings.
Photographs of Colorado wild birds organized into 35 groupings.
Links outdoor recreation sites, both public and private, into a network of sites where visitors can observe birds and other wildlife, often in addition to archaeological and paleontological treasures.
Google group forum for Colorado birding.
Collects data on the distribution, abundance, habitat use, and breeding phenology of the avifauna breeding in Colorado, and compares that data to data collected during the first Atlas project.
Site descriptions and checklists for every Colorado county, plus information on habitats, hazards, access to sites and specialty species.
A non-profit, volunteer organization devoted to the study, conservation, and enjoyment of Colorado's birds.
Broaden your understanding of birds. Free and premium content for all knowledge levels. Learn everything—from birding basics to college level ornithology.
Scientific excellence and technological innovation to advance the understanding of nature and to engage people of all ages in learning about birds and protecting the planet.
Gallery of mostly Colorado bird photographs. (Thumbnails are small, but clicking on them pulls up a larger version, good source for helping to identify wild birds.
Advocates for the environment. Connects people with nature through education, conservation and research.
For those who like spending time outdoors looking for wildlife, including birds, who also like drinking a cold one afterwards.
Bringing Birders Together in the Denver Metro Area through outstanding field trips and programs.
Recording, identifying, and interpreting bird sounds.
Evergreen Audubon was founded first as the Evergreen Naturalists, Inc. in 1968 for the purpose of conserving and protecting the natural environment, and informing the community about the natural environment.
From Project FeederWatch, a list of almost 100 common feeder birds, cross referenced as to what they like to eat and where they like to eat it.
Short summaries on accipiters, buteos, eagles, falcons, ospreys and vultures (yes, vultures are considered birds of prey) by Raptor Trust. (Surprisingly, the California Condor isn't one of the vultures listed.)
HMANA’s mission is “To advance the scientific knowledge and promote conservation of raptor populations through study, enjoyment, and appreciation of raptor migration.”
The mission of HawkWatch International is to conserve our environment through education, long-term monitoring, and scientific research on raptors as indicators of ecosystem health.
A place to learn about attracting, watching, feeding, and studying the hummingbirds that breed in North America.
Beginner-level comparison groups of bird songs and sounds from Land Birds of North America, Western region.
World's largest and oldest scientific archive of biodiversity audio and video recordings.
Lang Elliott’s gorgeous video and audio celebrations of wild birds and other wonders of the natural world. Well worth spending some time here—especially on a rainy afternoon!
Jim Kennedy’s photographs and narratives that focus on wildlife and other aspects of nature at or near the Metzger Farm Open Space (jointly owned by the cities of Broomfield and Westminster, Colorado).
A nationwide monitoring program designed to track status and trends in the reproductive biology of birds, including when nesting occurs, number of eggs laid, how many eggs hatch, and how many hatchlings survive.
Serves as the portal for avian information collected by the Bird Conservancy of the Rockies and our collaborators in the Rocky Mountains, Great Plains and Intermountain West.
Rescue, rehabilitation & release of injured birds of prey.
These hawks present a significant identification problem for many beginning and intermediate (and even more advanced!) birders. This is the best online source for IDing these two accipiters.
Colorado Birding Society’s page listing of bird species and their status (rare migrant; common spring, summer, fall; uncommon spring and fall migrant, etc.). (“Four-letter codes” are shorthand for bird’s common name.)
Photography Work of Steve Walter and Recommended Nature Links.
Run by the Idaho Museum of Natural History
Photographic collection of wild birds taken at various Westminster open spaces.
Photographic collection of wild birds taken at various City of Westminster open spaces.
Located in Boulder County, Wild Bird Company is a locally-owned and family-operated business now in their 27th year of operation. The owner, Steve Frye, leads free, no registration required, weekly Saturday wild bird walks from 7:30 am - 10 am. (meet at Wild Bird Company, 1641 - 28th St., Boulder, CO, phone 303-442-1322). (Also, see the link to Wild Bird Company Weekly Bird Walks Photos).
For the past 25-years, Steve Frye, the owner of Wild Bird Company in Boulder, has been leading weekly Saturday wild bird walks. Each “Album” on this Flickr website contains a collection of photos taken by participants during each of those bird walks. Very good source for photos of Boulder-area birds.)
David and Kathy Menough, 7370 W. 88th Avenue, Arvada CO 80021 - 303-467-2644
Scott and Sandy Menough, 2720 S. Wadsworth, Denver CO 80227 - 303-987-1065
Sharing bird sounds from around the world.
Developed and run by the Cornell Lab of Ornithology, the YardMap Network is a web-based interactive citizen science project designed to help professional scientists and birders alike cultivate a rich understanding of bird habitat. It asks participants to locate their yards on a Google map and then use easy point-and-click tools to define habitat types and describe the bird-friendly, carbon-neutral steps the homeowners are taking in them — that is, planting natives, putting up bird feeders, installing solar panels, etc.