- Adams1
- Alamosa2
- Arapahoe3
- Archuleta4
- Baca5
- Bent6
- Boulder7
- Broomfield8
- Chaffee9
- Cheyenne10
- Clear Creek11
- Conejos12
- Costilla13
- Crowley14
- Custer15
- Delta16
- Denver17
- Dolores18
- Douglas19
- Eagle20
- El Paso21
- Elbert22
- Fremont23
- Garfield24
- Gilpin25
- Grand26
- Gunnison27
- Hinsdale28
- Huerfano29
- Jackson30
- Jefferson31
- Kiowa32
- Kit Carson33
- La Plata34
- Lake35
- Larimer36
- Las Animas37
- Lincoln38
- Logan39
- Mesa40
- Mineral41
- Moffat42
- Montezuma43
- Montrose44
- Morgan45
- Otero46
- Ouray47
- Park48
- Phillips49
- Pitkin50
- Prowers51
- Pueblo52
- Rio Blanco53
- Rio Grande54
- Routt55
- Saguache56
- San Juan57
- San Miguel58
- Sedgwick59
- Summit60
- Teller61
- Washington62
- Weld63
- Yuma64
Boulder County
Author(s): Bill Kaempfer, Nathan Pieplow
County Seat: Boulder
Size: 741 square miles
Low Elevation: 4,893 ft. - St. Vrain Creek on the Weld border
High Elevation: 14,255 ft. - Longs Peak
Best Birds: Sharp-tailed Sandpiper (1975), Garganey (1992), Brambling (1983)
Checklist: Boulder County Checklist
Introduction: Though it is usually included in discussions of the "Metro Area," the city of Boulder considers itself distinct and has bought enough open space along its south and east borders to ensure that the suburbs of Denver never envelop it. With its numerous plains reservoirs, migrant traps, and mountain parks (including the highest part of Rocky Mountain National Park), Boulder County has something to offer the birder on every day of the year. Many thanks to Bill Schmoker for his comments and revisions on the text of this page, and to Bill Kaempfer and Randy Seibert for their contributions.
Contact the Editor with Corrections and Suggestions
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Birding Sites
Allenspark
Habitat: Mixed Conifer Forest, Aspen Grove, Urban/Suburban, Mountain Meadow, Lodgepole Forest
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Bobolink Trailhead
Habitat: Grassland/Prairie, Lowland Riparian, Stream
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Boulder Creek & 75th Street
Habitat: Stream, Lowland Riparian, Grassland/Prairie
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Boulder Creek (downtown section)
Habitat: Lowland Riparian, Stream
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Boulder Valley Ranch
Habitat: Short-grass Prairie, Yucca, Pond/Lake/Reservoir, Hedgerow/Shelterbelt
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Brainard Lake area
Habitat: Spruce-Fir Forest, Pond/Lake/Reservoir, Streamside Willow, Krummholz, Alpine Tundra, Cliff Face
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Button Rock Preserve
Habitat: Ponderosa Forest, Mixed Conifer Forest, Foothill Shrub, Stream, Cliff Face, Mountain Meadow, Streamside Willow
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Caribou Ranch Open Space
Habitat: Ponderosa Forest, Lodgepole Forest, Mixed Conifer Forest, Mountain Meadow, Streamside Willow, Foothill Shrub
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Cottonwood Trailhead and Hayden Lake
Habitat: Pond/Lake/Reservoir, Stream, Lowland Riparian, Grassland/Prairie
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CU South Campus Ponds
Habitat: Pond/Lake/Reservoir, Grassland/Prairie, Hedgerow/Shelterbelt
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Doudy Draw and the Mesa Trail
Habitat: Lowland Riparian, Stream, Foothill Shrub, Grassland/Prairie, Ponderosa Forest, Cliff Face
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Eldorado Canyon State Park
Habitat: Lowland Riparian, Cliff Face, Stream, Mixed Conifer Forest, Ponderosa Forest, Mountain Meadows
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Gregory Canyon
Habitat: Ponderosa Forest, Foothill Shrub, Lowland Riparian, Cliff Face, Stream
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Gunbarrel and Niwot area
Habitat: Pond/Lake/Reservoir, Stream, Lowland Riparian, Grassland/Prairie
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Hall Ranch Open Space
Habitat: Foothill Shrub, Ponderosa Forest
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Heil Valley Ranch
Habitat: Ponderosa Forest, Mountain Meadow, Foothills Shrub, Cliff Face
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Humane Society Dog Walk Park
Habitat: Stream, Lowland Riparian, Marsh
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Jim Hamm Nature Area
Habitat: Pond/Lake/Reservoir, Hedgerow/Shelterbelt
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Lagerman Reservoir and the Swede Lakes
Habitat: Pond/Lake/Reservoir, Grassland/Prairie, Marsh
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Left Hand Valley Reservoir area
Habitat: Lake/Pond/Reservoir, Grassland/Prairie
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Lyons Area
Habitat: Lowland Riparian, Foothill Scrub, Cliff Face, Stream, Urban/Suburban
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Marshall Mesa
Habitat: Pond/Lake/Reservoir, Foothill Shrub, Ponderosa Forest, Grassland/Prairie
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Mount Sanitas
Habitat: Ponderosa Forest, Lowland Riparian, Foothill Shrub, Cliff Face
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Panama Reservoir area
Habitat: Pond/Lake/Reservoir, Hedgerow/Shelterbelt, Wet Meadow
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Prince Lakes, Erie and Thomas Reservoirs
Habitat: Pond/Lake/Reservoir
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Saint Vrain Greenway
Habitat: Pond/Lake/Reservoir, Lowland Riparian, Stream, Urban/Suburban
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Stearns Lake
Habitat: Pond/Lake/Reservoir, Marsh, Stream, Grassland/Prairie, Hedgerow/Shelterbelt
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Teller Lake #5 and Culver Ponds
Habitat: Pond/Lake/Reservoir, Lowland Riparian, Hedgerow/Shelterbelt, Marsh
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Valmont Reservoir complex
Habitat: Pond/Lake/Reservoir, Grassland/Prairie, Hedgerow/Shelterbelt
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Walden Ponds/Sawhill Ponds Complex
Habitat: Pond/Lake/Reservoir, Lowland Riparian, Marsh, Hedgerow/Shelterbelt, Stream
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Walker Ranch Open Space
Habitat: Burn Area, Ponderosa Forest, Mountain Meadow, Stream, Aspen Grove
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Waneka Lake
Habitat: Pond/Lake/Reservoir, Lowland Riparian, Marsh
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Wild Basin
Habitat: Ponderosa Forest, Aspen Grove, Stream, Streamside Willow, Mountain Meadow, Lodgepole Forest, Burn Area
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