BBS Route · Colorado · BCR 10
Lay Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 97 species recorded across 28 survey years, still active.
97Species Recorded
28Years Surveyed
1996–2024Span
3Observers
Bird Species Found on Colorado Lay
Top 40 of 97 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Western Meadowlark | Icteridae | 122 | 2024 | +58% | 1998 | |
| Brewer's Sparrow | Passerellidae | 74 | 2024 | +15% | 1998 | |
| Mourning Dove | Columbidae | 70 | 2024 | -28% | 1998 | |
| Pinyon Jay | Corvidae | 60 | 2024 | -31% | 1999 | |
| Cliff Swallow | Hirundinidae | 34 | 2024 | +2% | 1998 | |
| Red-winged Blackbird | Icteridae | 27 | 2024 | -40% | 1998 | |
| Vesper Sparrow | Passerellidae | 27 | 2024 | -28% | 1998 | |
| Sage Thrasher | Mimidae | 26 | 2024 | -67% | 1998 | |
| American Robin | Turdidae | 19 | 2024 | -23% | 1998 | |
| Horned Lark | Alaudidae | 15 | 2024 | -39% | 1998 | |
| Brewer's Blackbird | Icteridae | 15 | 2024 | -64% | 1998 | |
| Black-billed Magpie | Corvidae | 14 | 2024 | -26% | 1998 | |
| Brown-headed Cowbird | Icteridae | 9 | 2024 | -73% | 1998 | |
| House Sparrow | Passeridae | 9 | 2024 | -50% | 1998 | |
| Wilson's Snipe | Scolopacidae | 7 | 2024 | +20% | 1998 | |
| European Starling | Sturnidae | 7 | 2024 | -82% | 1998 | |
| Common Raven | Corvidae | 7 | 2024 | +100% | 2007 | |
| Bushtit | Aegithalidae | 7 | 2004 | n/a | n/a | |
| Eurasian Collared-Dove | Columbidae | 7 | 2024 | +15% | 2013 | |
| Yellow-headed Blackbird | Icteridae | 6 | 2024 | -79% | 1998 | |
| Bullock's Oriole | Icteridae | 5 | 2024 | +71% | 1998 | |
| Rock Wren | Troglodytidae | 5 | 2024 | +36% | 1998 | |
| Lark Sparrow | Passerellidae | 5 | 2024 | +100% | 1999 | |
| Northern Shoveler | Anatidae | 5 | 2004 | +150% | 2001 | |
| American Kestrel | Falconidae | 4 | 2024 | -13% | 1998 | |
| Western Kingbird | Tyrannidae | 4 | 2024 | -24% | 1998 | |
| Green-tailed Towhee | Passerellidae | 4 | 2024 | -43% | 1998 | |
| Lark Bunting | Passerellidae | 4 | 2017 | -69% | 2000 | |
| Gadwall | Anatidae | 4 | 2024 | +13% | 1999 | |
| Bewick's Wren | Troglodytidae | 4 | 2024 | -22% | 1999 | |
| Sandhill Crane | Gruidae | 4 | 2024 | +167% | 2013 | |
| Woodhouse's Scrub-Jay | Corvidae | 4 | 2023 | -64% | 2022 | |
| Say's Phoebe | Tyrannidae | 3 | 2024 | -53% | 1998 | |
| House Finch | Fringillidae | 3 | 2024 | -72% | 1998 | |
| Canada Goose | Anatidae | 3 | 2024 | -54% | 2005 | |
| Spotted Towhee | Passerellidae | 3 | 2024 | +60% | 2000 | |
| Greater Sage-Grouse | Phasianidae | 3 | 2014 | -64% | 2004 | |
| American Crow | Corvidae | 3 | 2012 | +200% | 2010 | |
| Western Wood-Pewee | Tyrannidae | 3 | 2024 | +50% | 2016 | |
| Wilson's Phalarope | Scolopacidae | 2 | 2019 | -50% | 1998 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.