A PDF field guide to the species reported in and around Rocky Mountain National Park, with common and scientific names and up to 3 photos of each, laid out for use in the field and offline.
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People most often report Dark-Eyed Junco, Myrtle Warbler, Ruby-Crowned Kinglet, Hermit Thrush and American Robin in and around Rocky Mountain National Park. Plants lead the list with 35 species, followed by 31 birds and 5 mammals.
The 20 species reported most often here, of 73 in the full guide.

Mountain Chickadee
Dark-Eyed Junco
Myrtle Warbler
Ruby-Crowned Kinglet

Broad-Tailed Hummingbird
Hermit Thrush
American Robin

Goldmantelziesel
Pine Siskin

Clark'S Nutcracker
White-Crowned Sparrow

Yellow-Bellied Marmot
Townsend'S Solitaire

Crossbill
Mule Deer

Common Stonecrop
Red-Breasted Nuthatch
Elk
Pygmy Nuthatch
White-Breasted Nuthatch