BBS Route · Colorado · BCR 18
Bethune Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 71 species recorded across 34 survey years, still active.
71Species Recorded
34Years Surveyed
1989–2023Span
3Observers
Bird Species Found on Colorado Bethune
Top 40 of 71 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Horned Lark | Alaudidae | 31 | 2023 | -69% | 1991 | |
| Great-tailed Grackle | Icteridae | 31 | 2018 | +315% | 2005 | |
| Lark Sparrow | Passerellidae | 28 | 2019 | +67% | 1991 | |
| Red-winged Blackbird | Icteridae | 25 | 2023 | -29% | 1991 | |
| Eurasian Collared-Dove | Columbidae | 21 | 2023 | +108% | 2006 | |
| Mourning Dove | Columbidae | 20 | 2023 | -70% | 1991 | |
| Western Meadowlark | Icteridae | 20 | 2023 | -84% | 1991 | |
| Northern Rough-winged Swallow | Hirundinidae | 20 | 2017 | 20× | 2013 | |
| Ring-necked Pheasant | Phasianidae | 10 | 2019 | +127% | 1991 | |
| Blue-winged Teal | Anatidae | 10 | 2016 | n/a | n/a | |
| Mallard | Anatidae | 8 | 2017 | +36% | 1992 | |
| House Sparrow | Passeridae | 8 | 2023 | -97% | 1991 | |
| Loggerhead Shrike | Laniidae | 7 | 2016 | +67% | 1993 | |
| Cassin's Sparrow | Passerellidae | 6 | 2019 | +146% | 1991 | |
| Lark Bunting | Passerellidae | 6 | 2023 | -94% | 1991 | |
| Say's Phoebe | Tyrannidae | 5 | 2015 | +100% | 1993 | |
| Grasshopper Sparrow | Passerellidae | 4 | 2019 | -42% | 1991 | |
| Red-tailed Hawk | Accipitridae | 3 | 2015 | +120% | 2002 | |
| Western Kingbird | Tyrannidae | 3 | 2023 | +3% | 1991 | |
| European Starling | Sturnidae | 3 | 2021 | -76% | 1992 | |
| Barn Swallow | Hirundinidae | 3 | 2023 | -68% | 1991 | |
| Brown-headed Cowbird | Icteridae | 3 | 2019 | -44% | 1996 | |
| Northern Mockingbird | Mimidae | 3 | 2018 | +100% | 1999 | |
| Long-billed Curlew | Scolopacidae | 3 | 2011 | n/a | n/a | |
| Purple Martin | Hirundinidae | 3 | 2015 | n/a | n/a | |
| Killdeer | Charadriidae | 2 | 2023 | -71% | 1991 | |
| American Crow | Corvidae | 2 | 2015 | -69% | 1992 | |
| Common Grackle | Icteridae | 2 | 2023 | -82% | 1991 | |
| Dickcissel | Cardinalidae | 2 | 2023 | +89% | 2003 | |
| Brewer's Blackbird | Icteridae | 2 | 2023 | -94% | 1994 | |
| Gadwall | Anatidae | 2 | 2017 | +20% | 2011 | |
| Wilson's Snipe | Scolopacidae | 2 | 2007 | -71% | 1994 | |
| Upland Sandpiper | Scolopacidae | 1 | 1989 | n/a | n/a | |
| Rock Pigeon | Columbidae | 1 | 2022 | -91% | 1991 | |
| Northern Harrier | Accipitridae | 1 | 2016 | +33% | 1994 | |
| Swainson's Hawk | Accipitridae | 1 | 2023 | -56% | 1996 | |
| Ferruginous Hawk | Accipitridae | 1 | 2018 | +0% | 1991 | |
| Burrowing Owl | Strigidae | 1 | 2023 | +183% | 1991 | |
| Common Nighthawk | Caprimulgidae | 1 | 2019 | +0% | 1991 | |
| Eastern Phoebe | Tyrannidae | 1 | 2004 | +0% | 1989 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.