BBS Route · Montana · BCR 10
Chestnut Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 118 species recorded across 53 survey years, still active.
118Species Recorded
53Years Surveyed
1968–2024Span
5Observers
Bird Species Found on Montana Chestnut
Top 40 of 118 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| American Robin | Turdidae | 69 | 2024 | -25% | 1970 | |
| Savannah Sparrow | Passerellidae | 60 | 2024 | 21× | 1970 | |
| Black-billed Magpie | Corvidae | 55 | 2024 | +82% | 1970 | |
| Yellow Warbler | Parulidae | 53 | 2024 | +63% | 1970 | |
| Pine Siskin | Fringillidae | 49 | 2024 | -28% | 1970 | |
| Red-winged Blackbird | Icteridae | 43 | 2024 | +117% | 1970 | |
| Willow Flycatcher | Tyrannidae | 42 | 2024 | +944% | 1980 | |
| White-crowned Sparrow | Passerellidae | 33 | 2024 | +24% | 1970 | |
| Warbling Vireo | Vireonidae | 31 | 2024 | +25% | 1970 | |
| Tree Swallow | Hirundinidae | 27 | 2024 | +82% | 1970 | |
| Lincoln's Sparrow | Passerellidae | 26 | 2024 | +856% | 1971 | |
| Song Sparrow | Passerellidae | 23 | 2024 | +27% | 1970 | |
| Red Crossbill | Fringillidae | 22 | 2017 | +225% | 1978 | |
| Veery | Turdidae | 16 | 2024 | +11% | 1970 | |
| Chipping Sparrow | Passerellidae | 15 | 2024 | +44% | 1970 | |
| Ruby-crowned Kinglet | Regulidae | 14 | 2024 | +57% | 1970 | |
| Common Yellowthroat | Parulidae | 12 | 2024 | +500% | 1972 | |
| Western Tanager | Cardinalidae | 10 | 2024 | -39% | 1970 | |
| Barn Swallow | Hirundinidae | 10 | 2018 | -28% | 1970 | |
| European Starling | Sturnidae | 9 | 2024 | -29% | 1970 | |
| Brown-headed Cowbird | Icteridae | 9 | 2024 | -59% | 1970 | |
| Northern House Wren | Troglodytidae | 9 | 2024 | -29% | 1970 | |
| Black-headed Grosbeak | Cardinalidae | 8 | 2023 | +60% | 1973 | |
| Bank Swallow | Hirundinidae | 8 | 2022 | n/a | n/a | |
| Brewer's Sparrow | Passerellidae | 7 | 2024 | +8% | 1970 | |
| Gray Catbird | Mimidae | 7 | 2024 | +278% | 1970 | |
| Mountain Bluebird | Turdidae | 7 | 2024 | -33% | 1970 | |
| Common Raven | Corvidae | 7 | 2024 | +55% | 1977 | |
| American Crow | Corvidae | 6 | 2024 | -19% | 1970 | |
| Swainson's Thrush | Turdidae | 5 | 2024 | +0% | 1973 | |
| Western Wood-Pewee | Tyrannidae | 4 | 2024 | +75% | 1972 | |
| Dusky Flycatcher | Tyrannidae | 4 | 2024 | +22% | 1972 | |
| Black-capped Chickadee | Paridae | 4 | 2024 | +64% | 1971 | |
| Red-naped Sapsucker | Picidae | 4 | 2024 | +140% | 1972 | |
| Evening Grosbeak | Fringillidae | 4 | 2022 | +117% | 1972 | |
| Rock Pigeon | Columbidae | 4 | 2021 | +250% | 1992 | |
| Ruffed Grouse | Phasianidae | 3 | 2022 | +25% | 1976 | |
| Clark's Nutcracker | Corvidae | 3 | 2019 | +60% | 1978 | |
| Cassin's Finch | Fringillidae | 3 | 2024 | -11% | 1970 | |
| Vesper Sparrow | Passerellidae | 3 | 2024 | -76% | 1970 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.