BBS Route · Colorado · BCR 16
Black Sulphur Cr Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 72 species recorded across 9 survey years, still active.
72Species Recorded
9Years Surveyed
2015–2024Span
1Observers
Bird Species Found on Colorado Black Sulphur Cr
Top 40 of 72 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Brewer's Sparrow | Passerellidae | 43 | 2024 | +4% | 2017 | |
| Green-tailed Towhee | Passerellidae | 34 | 2024 | +4% | 2017 | |
| American Robin | Turdidae | 22 | 2024 | -5% | 2017 | |
| Spotted Towhee | Passerellidae | 17 | 2024 | -10% | 2017 | |
| Violet-green Swallow | Hirundinidae | 16 | 2024 | +3% | 2017 | |
| Common Raven | Corvidae | 13 | 2024 | -45% | 2017 | |
| Blue-gray Gnatcatcher | Polioptilidae | 13 | 2024 | +97% | 2017 | |
| Mountain Bluebird | Turdidae | 12 | 2024 | -39% | 2017 | |
| Broad-tailed Hummingbird | Trochilidae | 11 | 2024 | -19% | 2017 | |
| Dusky Flycatcher | Tyrannidae | 10 | 2024 | -33% | 2017 | |
| Vesper Sparrow | Passerellidae | 9 | 2024 | +7% | 2017 | |
| Red-winged Blackbird | Icteridae | 8 | 2024 | -11% | 2017 | |
| Rock Wren | Troglodytidae | 8 | 2024 | -35% | 2017 | |
| Brewer's Blackbird | Icteridae | 7 | 2024 | +12% | 2017 | |
| Song Sparrow | Passerellidae | 7 | 2024 | -21% | 2017 | |
| Virginia's Warbler | Parulidae | 7 | 2024 | +229% | 2017 | |
| Say's Phoebe | Tyrannidae | 6 | 2024 | +36% | 2017 | |
| Black-billed Magpie | Corvidae | 6 | 2024 | -11% | 2017 | |
| Orange-crowned Warbler | Parulidae | 6 | 2024 | +175% | 2017 | |
| Mountain Chickadee | Paridae | 6 | 2024 | +33% | 2018 | |
| Clark's Nutcracker | Corvidae | 5 | 2022 | -44% | 2018 | |
| Greater Sage-Grouse | Phasianidae | 5 | 2022 | +400% | 2017 | |
| House Finch | Fringillidae | 4 | 2024 | +50% | 2019 | |
| Pine Siskin | Fringillidae | 4 | 2015 | n/a | n/a | |
| Black-headed Grosbeak | Cardinalidae | 4 | 2024 | +8% | 2017 | |
| Cliff Swallow | Hirundinidae | 4 | 2021 | +60% | 2016 | |
| Barn Swallow | Hirundinidae | 4 | 2024 | -39% | 2017 | |
| Warbling Vireo | Vireonidae | 4 | 2024 | -39% | 2017 | |
| Northern House Wren | Troglodytidae | 4 | 2024 | -21% | 2017 | |
| Hermit Thrush | Turdidae | 4 | 2024 | +50% | 2019 | |
| Mallard | Anatidae | 3 | 2024 | +0% | 2016 | |
| Brown-headed Cowbird | Icteridae | 3 | 2018 | +25% | 2016 | |
| Cassin's Finch | Fringillidae | 3 | 2021 | -70% | 2015 | |
| Chipping Sparrow | Passerellidae | 3 | 2024 | -14% | 2017 | |
| Killdeer | Charadriidae | 3 | 2024 | +200% | 2019 | |
| Northern Rough-winged Swallow | Hirundinidae | 3 | 2024 | n/a | n/a | |
| Wilson's Snipe | Scolopacidae | 2 | 2023 | -20% | 2017 | |
| Mourning Dove | Columbidae | 2 | 2024 | +3% | 2017 | |
| Red-tailed Hawk | Accipitridae | 2 | 2024 | -14% | 2017 | |
| American Kestrel | Falconidae | 2 | 2022 | -25% | 2016 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.