Download a professional PDF field guide featuring all the species found in Boulder. Perfect for outdoor adventures, education, and nature exploration.
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Showing 20 most frequently observed species out of 80 total documented species.
Cat Squirrel

Beargrass
Pillbug
Ailanthus
Boxelder

Black-Billed Magpie
House Finch

Motherwort

Chokecherry
Chicory
Boxelder Bug
Seven-Spot Ladybird
Honeybee

Pusley
Hedge Garlic

Cheeses
Asian Lady Beetle
American Robin

Peal

Buckthorn
Get all 80 species with 3-4 high-quality images each, detailed descriptions, and a downloadable PDF for offline use.
Compared to 8 nearby locations in Boulder County County, Colorado
These comparisons are based on documented wildlife observations from citizen science data. Locations with higher species counts may have more observation activity, different habitat types, or larger coverage areas. Regional rankings help identify biodiversity hotspots and unique natural areas within Boulder County County.
The Boulder ecosystem supports 80 documented wildlife species across 77 taxonomic genera. Located in Boulder County, Colorado, this area provides critical habitat with diverse natural communities. The location hosts 17 frequently observed species and 15 occasionally documented species, creating a balanced ecosystem with both resident and visiting wildlife.