BBS Route · Montana · BCR 17
Custer Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 60 species recorded across 2 survey years, no longer active.
60Species Recorded
2Years Surveyed
2019–2022Span
2Observers
Bird Species Found on Montana Custer
Top 40 of 60 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Western Meadowlark | Icteridae | 245 | 2022 | +66% | 2019 | |
| Cliff Swallow | Hirundinidae | 145 | 2022 | n/a | n/a | |
| Vesper Sparrow | Passerellidae | 99 | 2022 | +350% | 2019 | |
| Lark Bunting | Passerellidae | 54 | 2022 | +8% | 2019 | |
| Brewer's Sparrow | Passerellidae | 37 | 2022 | +517% | 2019 | |
| Lark Sparrow | Passerellidae | 35 | 2022 | -21% | 2019 | |
| Brown-headed Cowbird | Icteridae | 33 | 2022 | +200% | 2019 | |
| Red-winged Blackbird | Icteridae | 33 | 2022 | +38% | 2019 | |
| Western Wood-Pewee | Tyrannidae | 23 | 2022 | +188% | 2019 | |
| Field Sparrow | Passerellidae | 22 | 2022 | +144% | 2019 | |
| Northern House Wren | Troglodytidae | 21 | 2022 | +24% | 2019 | |
| Western Kingbird | Tyrannidae | 20 | 2022 | +150% | 2019 | |
| Horned Lark | Alaudidae | 20 | 2022 | +900% | 2019 | |
| Spotted Towhee | Passerellidae | 19 | 2022 | +850% | 2019 | |
| House Sparrow | Passeridae | 19 | 2022 | -10% | 2019 | |
| Mourning Dove | Columbidae | 17 | 2022 | -72% | 2019 | |
| Yellow Warbler | Parulidae | 12 | 2022 | -8% | 2019 | |
| Common Grackle | Icteridae | 11 | 2022 | +450% | 2019 | |
| American Crow | Corvidae | 10 | 2022 | +0% | 2019 | |
| Grasshopper Sparrow | Passerellidae | 10 | 2022 | +100% | 2019 | |
| Killdeer | Charadriidae | 9 | 2022 | +125% | 2019 | |
| Ring-necked Pheasant | Phasianidae | 9 | 2022 | -40% | 2019 | |
| Barn Swallow | Hirundinidae | 7 | 2022 | +17% | 2019 | |
| Common Raven | Corvidae | 7 | 2022 | n/a | n/a | |
| Brewer's Blackbird | Icteridae | 6 | 2022 | -14% | 2019 | |
| Chipping Sparrow | Passerellidae | 6 | 2019 | n/a | n/a | |
| Savannah Sparrow | Passerellidae | 5 | 2019 | n/a | n/a | |
| American Robin | Turdidae | 5 | 2022 | -44% | 2019 | |
| Mountain Bluebird | Turdidae | 5 | 2019 | n/a | n/a | |
| European Starling | Sturnidae | 4 | 2022 | -75% | 2019 | |
| Yellow-breasted Chat | Icteriidae | 4 | 2022 | n/a | n/a | |
| Rock Wren | Troglodytidae | 4 | 2022 | n/a | n/a | |
| Rock Pigeon | Columbidae | 3 | 2022 | +50% | 2019 | |
| Red-tailed Hawk | Accipitridae | 3 | 2019 | n/a | n/a | |
| Say's Phoebe | Tyrannidae | 3 | 2022 | -25% | 2019 | |
| Eastern Kingbird | Tyrannidae | 3 | 2022 | n/a | n/a | |
| Mallard | Anatidae | 2 | 2019 | n/a | n/a | |
| Sharp-tailed Grouse | Phasianidae | 2 | 2019 | n/a | n/a | |
| Short-eared Owl | Strigidae | 2 | 2019 | n/a | n/a | |
| Baltimore Oriole | Icteridae | 2 | 2019 | n/a | n/a |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.