BBS Route · Colorado · BCR 16
Groundhog Rs Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 118 species recorded across 31 survey years, still active.
118Species Recorded
31Years Surveyed
1992–2024Span
6Observers
Bird Species Found on Colorado Groundhog Rs
Top 40 of 118 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| American Robin | Turdidae | 52 | 2024 | -2% | 1994 | |
| Warbling Vireo | Vireonidae | 33 | 2024 | +26% | 1994 | |
| Northern House Wren | Troglodytidae | 31 | 2024 | +255% | 1994 | |
| Western Meadowlark | Icteridae | 18 | 2024 | -7% | 1994 | |
| European Starling | Sturnidae | 16 | 2024 | +4% | 1994 | |
| Pine Siskin | Fringillidae | 14 | 2024 | -65% | 1994 | |
| Canada Goose | Anatidae | 14 | 2022 | +101% | 2003 | |
| Western Wood-Pewee | Tyrannidae | 13 | 2024 | -21% | 1994 | |
| Ruby-crowned Kinglet | Regulidae | 12 | 2024 | +23% | 1994 | |
| Western Tanager | Cardinalidae | 12 | 2024 | +390% | 1997 | |
| Brewer's Blackbird | Icteridae | 11 | 2024 | -65% | 1994 | |
| White-crowned Sparrow | Passerellidae | 11 | 2024 | -8% | 1994 | |
| Cliff Swallow | Hirundinidae | 11 | 2024 | +367% | 1997 | |
| Hermit Thrush | Turdidae | 10 | 2024 | -65% | 1994 | |
| Vesper Sparrow | Passerellidae | 10 | 2024 | +25% | 1995 | |
| Violet-green Swallow | Hirundinidae | 9 | 2024 | -40% | 1994 | |
| Green-tailed Towhee | Passerellidae | 8 | 2024 | -45% | 1994 | |
| Evening Grosbeak | Fringillidae | 8 | 2019 | +89% | 2010 | |
| Red-naped Sapsucker | Picidae | 7 | 2024 | +86% | 2000 | |
| Lincoln's Sparrow | Passerellidae | 7 | 2024 | +0% | 1996 | |
| Orange-crowned Warbler | Parulidae | 6 | 2024 | -38% | 1994 | |
| Mountain Bluebird | Turdidae | 6 | 2024 | -28% | 1994 | |
| American Coot | Rallidae | 6 | 1993 | n/a | n/a | |
| Yellow Warbler | Parulidae | 5 | 2024 | -11% | 1994 | |
| Dusky Flycatcher | Tyrannidae | 4 | 2024 | +7% | 1997 | |
| Wilson's Warbler | Parulidae | 4 | 2024 | -64% | 1994 | |
| Red-breasted Nuthatch | Sittidae | 4 | 2024 | +100% | 2000 | |
| Mountain Chickadee | Paridae | 4 | 2024 | -8% | 1994 | |
| Red Crossbill | Fringillidae | 4 | 2024 | -50% | 2005 | |
| Lark Sparrow | Passerellidae | 4 | 2024 | +33% | 2021 | |
| Steller's Jay | Corvidae | 3 | 2024 | +367% | 1995 | |
| Common Raven | Corvidae | 3 | 2024 | +11% | 1998 | |
| Red-winged Blackbird | Icteridae | 3 | 2024 | -90% | 1994 | |
| Song Sparrow | Passerellidae | 3 | 2024 | -14% | 1994 | |
| Black-headed Grosbeak | Cardinalidae | 3 | 2024 | +14% | 1997 | |
| American Kestrel | Falconidae | 3 | 2023 | +33% | 1996 | |
| Green-winged Teal | Anatidae | 3 | 2004 | +50% | 1994 | |
| Cinnamon Teal | Anatidae | 3 | 1998 | +200% | 1994 | |
| Purple Martin | Hirundinidae | 3 | 2024 | +0% | 2002 | |
| Common Merganser | Anatidae | 3 | 2016 | +100% | 2000 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.