BBS Route · Colorado · BCR 16
Tarryall Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 117 species recorded across 28 survey years, still active.
117Species Recorded
28Years Surveyed
1988–2023Span
4Observers
Bird Species Found on Colorado Tarryall
Top 40 of 117 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| American White Pelican | Pelecanidae | 55 | 2023 | +813% | 2008 | |
| Canada Goose | Anatidae | 52 | 2023 | +278% | 1990 | |
| Cliff Swallow | Hirundinidae | 26 | 2023 | -51% | 1990 | |
| American Robin | Turdidae | 22 | 2023 | -48% | 1990 | |
| Red-winged Blackbird | Icteridae | 17 | 2023 | -63% | 1990 | |
| Double-crested Cormorant | Phalacrocoracidae | 13 | 2023 | +314% | 2016 | |
| Brewer's Blackbird | Icteridae | 11 | 2023 | +0% | 1990 | |
| Brown-headed Cowbird | Icteridae | 10 | 2023 | -3% | 1990 | |
| Black-billed Magpie | Corvidae | 8 | 2023 | +139% | 1990 | |
| Tree Swallow | Hirundinidae | 8 | 2023 | +133% | 1992 | |
| Warbling Vireo | Vireonidae | 8 | 2023 | -21% | 1990 | |
| Broad-tailed Hummingbird | Trochilidae | 6 | 2023 | -66% | 1990 | |
| Song Sparrow | Passerellidae | 6 | 2023 | -62% | 1990 | |
| Western Tanager | Cardinalidae | 6 | 2023 | +114% | 1990 | |
| Rock Wren | Troglodytidae | 6 | 2023 | -30% | 1990 | |
| Western Bluebird | Turdidae | 6 | 2021 | +11% | 1997 | |
| Steller's Jay | Corvidae | 5 | 2023 | +10% | 1992 | |
| European Starling | Sturnidae | 5 | 2018 | -11% | 1992 | |
| Barn Swallow | Hirundinidae | 5 | 2021 | -50% | 1990 | |
| Pine Siskin | Fringillidae | 5 | 2023 | -19% | 1992 | |
| Common Grackle | Icteridae | 5 | 2022 | +283% | 2009 | |
| House Sparrow | Passeridae | 5 | 2015 | n/a | n/a | |
| Mallard | Anatidae | 4 | 2023 | +169% | 1991 | |
| Evening Grosbeak | Fringillidae | 4 | 2023 | +100% | 2018 | |
| Savannah Sparrow | Passerellidae | 4 | 2023 | +89% | 1990 | |
| Violet-green Swallow | Hirundinidae | 4 | 2023 | -90% | 1990 | |
| Mountain Bluebird | Turdidae | 4 | 2023 | -70% | 1990 | |
| American Coot | Rallidae | 4 | 2009 | +300% | 2007 | |
| Pinyon Jay | Corvidae | 4 | 2007 | n/a | n/a | |
| White-throated Swift | Apodidae | 4 | 2014 | n/a | n/a | |
| Ring-billed Gull | Laridae | 4 | 2019 | n/a | n/a | |
| Western Wood-Pewee | Tyrannidae | 3 | 2023 | -60% | 1990 | |
| Common Raven | Corvidae | 3 | 2023 | -64% | 1990 | |
| Vesper Sparrow | Passerellidae | 3 | 2023 | -26% | 1991 | |
| Ruby-crowned Kinglet | Regulidae | 3 | 2023 | -46% | 1990 | |
| Willow Flycatcher | Tyrannidae | 3 | 2005 | +200% | 1989 | |
| Gadwall | Anatidae | 3 | 2023 | -44% | 1993 | |
| Black-headed Grosbeak | Cardinalidae | 3 | 2023 | +100% | 2011 | |
| Turkey Vulture | Cathartidae | 3 | 2021 | +200% | 2016 | |
| Red-naped Sapsucker | Picidae | 2 | 2023 | -17% | 2000 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.