BBS Route · Colorado · BCR 18
Crowley Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 72 species recorded across 29 survey years, still active.
72Species Recorded
29Years Surveyed
1989–2024Span
4Observers
Bird Species Found on Colorado Crowley
Top 40 of 72 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Western Meadowlark | Icteridae | 163 | 2024 | -27% | 1992 | |
| Horned Lark | Alaudidae | 112 | 2024 | -54% | 1992 | |
| Cassin's Sparrow | Passerellidae | 111 | 2024 | -15% | 1992 | |
| Northern Mockingbird | Mimidae | 91 | 2024 | +169% | 1992 | |
| Mourning Dove | Columbidae | 69 | 2024 | +1% | 1992 | |
| Lark Sparrow | Passerellidae | 31 | 2024 | -41% | 1992 | |
| Bullock's Oriole | Icteridae | 24 | 2024 | +73% | 1992 | |
| House Sparrow | Passeridae | 17 | 2024 | -54% | 1992 | |
| Western Kingbird | Tyrannidae | 16 | 2024 | +7% | 1992 | |
| Loggerhead Shrike | Laniidae | 16 | 2024 | +230% | 1993 | |
| Swainson's Hawk | Accipitridae | 8 | 2024 | -53% | 1992 | |
| European Starling | Sturnidae | 7 | 2024 | +150% | 1992 | |
| Chihuahuan Raven | Corvidae | 7 | 2023 | +83% | 2011 | |
| Red-tailed Hawk | Accipitridae | 6 | 2024 | +150% | 1992 | |
| Brewer's Sparrow | Passerellidae | 6 | 1994 | +500% | 1989 | |
| Common Raven | Corvidae | 5 | 2024 | +175% | 1997 | |
| Red-winged Blackbird | Icteridae | 5 | 2024 | +100% | 1994 | |
| Common Grackle | Icteridae | 4 | 2023 | -59% | 1992 | |
| Greater Roadrunner | Cuculidae | 4 | 2010 | +100% | 1996 | |
| Killdeer | Charadriidae | 3 | 2023 | -63% | 1992 | |
| Scaled Quail | Odontophoridae | 3 | 2024 | -86% | 1992 | |
| Ferruginous Hawk | Accipitridae | 3 | 2024 | -40% | 1992 | |
| Common Nighthawk | Caprimulgidae | 3 | 2024 | -82% | 1992 | |
| Say's Phoebe | Tyrannidae | 3 | 2024 | -46% | 1994 | |
| Brown-headed Cowbird | Icteridae | 3 | 2024 | +11% | 1993 | |
| Grasshopper Sparrow | Passerellidae | 3 | 2023 | -36% | 1999 | |
| Mountain Plover | Charadriidae | 2 | 2003 | -54% | 1992 | |
| Rock Pigeon | Columbidae | 2 | 2024 | -82% | 1997 | |
| American Kestrel | Falconidae | 2 | 2018 | -40% | 1992 | |
| Lark Bunting | Passerellidae | 2 | 2024 | -76% | 1992 | |
| Barn Swallow | Hirundinidae | 2 | 2024 | -45% | 1992 | |
| American Robin | Turdidae | 2 | 2024 | -25% | 1992 | |
| Curve-billed Thrasher | Mimidae | 2 | 2024 | +125% | 1993 | |
| Blue-winged Teal | Anatidae | 2 | 1999 | +0% | 1992 | |
| Blue Grosbeak | Cardinalidae | 2 | 2024 | -29% | 1995 | |
| Northern House Wren | Troglodytidae | 2 | 2023 | +67% | 2002 | |
| Cassin's Kingbird | Tyrannidae | 2 | 2022 | +100% | 2004 | |
| Sage Thrasher | Mimidae | 2 | 2017 | +0% | 2003 | |
| Cliff Swallow | Hirundinidae | 2 | 2024 | +56% | 2008 | |
| Eurasian Collared-Dove | Columbidae | 2 | 2024 | +50% | 2012 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.