BBS Route · Montana · BCR 10
Boulder Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 101 species recorded across 50 survey years, still active.
101Species Recorded
50Years Surveyed
1969–2024Span
4Observers
Bird Species Found on Montana Boulder
Top 40 of 101 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Common Raven | Corvidae | 119 | 2024 | 26× | 1979 | |
| Western Meadowlark | Icteridae | 106 | 2024 | -27% | 1971 | |
| Vesper Sparrow | Passerellidae | 100 | 2024 | +21% | 1971 | |
| European Starling | Sturnidae | 42 | 2024 | +25% | 1971 | |
| Brewer's Blackbird | Icteridae | 41 | 2024 | -51% | 1971 | |
| Brewer's Sparrow | Passerellidae | 38 | 2024 | -11% | 1971 | |
| Franklin's Gull | Laridae | 30 | 1993 | -56% | 1974 | |
| Long-billed Curlew | Scolopacidae | 26 | 2024 | +5% | 1971 | |
| Horned Lark | Alaudidae | 22 | 2024 | -82% | 1971 | |
| Mourning Dove | Columbidae | 18 | 2024 | -58% | 1971 | |
| Brown-headed Cowbird | Icteridae | 17 | 2024 | -22% | 1971 | |
| Red-winged Blackbird | Icteridae | 16 | 2024 | -19% | 1971 | |
| House Sparrow | Passeridae | 14 | 2024 | +18% | 1971 | |
| American Robin | Turdidae | 13 | 2024 | +378% | 1971 | |
| Eastern Kingbird | Tyrannidae | 13 | 2024 | +400% | 1972 | |
| Black-billed Magpie | Corvidae | 12 | 2024 | -49% | 1971 | |
| Savannah Sparrow | Passerellidae | 12 | 2024 | -50% | 1971 | |
| Ring-necked Pheasant | Phasianidae | 10 | 2024 | -20% | 1971 | |
| Dusky Flycatcher | Tyrannidae | 9 | 2024 | +480% | 1972 | |
| Sage Thrasher | Mimidae | 8 | 2024 | -73% | 1971 | |
| Ring-billed Gull | Laridae | 7 | 2022 | -45% | 2004 | |
| Cliff Swallow | Hirundinidae | 6 | 2021 | -85% | 1994 | |
| Rock Wren | Troglodytidae | 6 | 2024 | -67% | 1971 | |
| Common Grackle | Icteridae | 6 | 2024 | 12× | 2004 | |
| Rock Pigeon | Columbidae | 5 | 2024 | +625% | 1979 | |
| Hammond's Flycatcher | Tyrannidae | 5 | 1989 | +400% | 1976 | |
| Western Kingbird | Tyrannidae | 4 | 2024 | +320% | 1971 | |
| Barn Swallow | Hirundinidae | 4 | 2024 | -83% | 1971 | |
| Clark's Nutcracker | Corvidae | 4 | 2022 | +88% | 1974 | |
| Pine Siskin | Fringillidae | 4 | 2024 | +50% | 1976 | |
| Warbling Vireo | Vireonidae | 4 | 2024 | +20% | 1979 | |
| Evening Grosbeak | Fringillidae | 4 | 1978 | n/a | n/a | |
| Sharp-tailed Grouse | Phasianidae | 3 | 1969 | n/a | n/a | |
| Bobolink | Icteridae | 3 | 2024 | -46% | 1971 | |
| Chipping Sparrow | Passerellidae | 3 | 2024 | +40% | 1973 | |
| Spotted Towhee | Passerellidae | 3 | 2024 | +60% | 1973 | |
| Lark Bunting | Passerellidae | 3 | 2004 | +13% | 1983 | |
| Mountain Bluebird | Turdidae | 3 | 2024 | +17% | 1971 | |
| Eurasian Collared-Dove | Columbidae | 3 | 2024 | +40% | 2013 | |
| California Gull | Laridae | 3 | 2017 | n/a | n/a |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.