Wildlife of Boulder County

Boulder County is comprised of 740 square miles of land nestled along the front range of Colorado just 30 miles northwest of Denver. Its proximity to the mountains, diverse landscapes, and various designated open spaces make the county ideal for observing local and even migrating wildlife. ...more ↓

Cliff Swallow ¹
Petrochelidon pyrrhonota

Purple Martin ²
Progne subis

Barn Swallow ³
Hirundo rustica

Violet-green Swallow ⁴
Tachycineta thalassina

Tree Swallow ⁵
Tachycineta bicolor

Bank Swallow ⁶
Riparia riparia

Northern Rough-winged Swallow ⁷
Stelgidopteryx serripennis

Edited by srupinsky, Melanie Hill, Deborah H Price, and Dave Sutherland, some rights reserved (CC BY-SA)

Photo Credits

1. (c) Eric Isley, some rights reserved (CC BY-NC), uploaded by Eric Isley
2. (c) Shanthanu Bhardwaj, some rights reserved (CC BY-SA)
3. (c) Steve Daniels, some rights reserved (CC BY-NC), uploaded by Steve Daniels
4. (c) Len Blumin, some rights reserved (CC BY-NC-ND)
5. (c) Rick Leche, some rights reserved (CC BY-NC-ND)
6. (c) Robin Gwen Agarwal, some rights reserved (CC BY-NC), uploaded by Robin Gwen Agarwal
7. (c) Jerry Oldenettel, some rights reserved (CC BY-NC-SA)

Wildlife of Boulder County

Cliff Swallow 1 Petrochelidon pyrrhonota

Purple Martin 2 Progne subis

Barn Swallow 3 Hirundo rustica

Violet-green Swallow 4 Tachycineta thalassina

Tree Swallow 5 Tachycineta bicolor

Bank Swallow 6 Riparia riparia

Northern Rough-winged Swallow 7 Stelgidopteryx serripennis