BBS Route · Maryland · BCR 29
Warfieldsbrg Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 99 species recorded across 55 survey years, still active.
99Species Recorded
55Years Surveyed
1966–2024Span
3Observers
Bird Species Found on Maryland Warfieldsbrg
Top 40 of 99 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| European Starling | Sturnidae | 126 | 2024 | -68% | 1968 | |
| American Crow | Corvidae | 63 | 2024 | +55% | 1968 | |
| Gray Catbird | Mimidae | 51 | 2024 | +93% | 1968 | |
| Northern Cardinal | Cardinalidae | 47 | 2024 | +186% | 1968 | |
| American Robin | Turdidae | 46 | 2024 | -12% | 1968 | |
| Chipping Sparrow | Passerellidae | 37 | 2024 | +146% | 1968 | |
| Carolina Wren | Troglodytidae | 37 | 2024 | 17× | 1969 | |
| Song Sparrow | Passerellidae | 26 | 2024 | +88% | 1968 | |
| House Sparrow | Passeridae | 26 | 2024 | -75% | 1968 | |
| Northern Mockingbird | Mimidae | 22 | 2024 | +6% | 1968 | |
| Northern House Wren | Troglodytidae | 20 | 2024 | +13% | 1968 | |
| Mourning Dove | Columbidae | 18 | 2024 | -52% | 1968 | |
| Fish Crow | Corvidae | 18 | 2024 | +32% | 1968 | |
| Canada Goose | Anatidae | 17 | 2024 | +48% | 1984 | |
| House Finch | Fringillidae | 16 | 2024 | +433% | 1983 | |
| Blue Jay | Corvidae | 14 | 2024 | +26% | 1968 | |
| Tufted Titmouse | Paridae | 14 | 2024 | +50% | 1968 | |
| Eastern Wood-Pewee | Tyrannidae | 13 | 2024 | +65% | 1968 | |
| Chimney Swift | Apodidae | 12 | 2024 | -42% | 1968 | |
| Field Sparrow | Passerellidae | 12 | 2024 | -43% | 1968 | |
| Wood Thrush | Turdidae | 12 | 2024 | -47% | 1968 | |
| Barn Swallow | Hirundinidae | 11 | 2024 | -29% | 1968 | |
| Eastern Kingbird | Tyrannidae | 10 | 2024 | +363% | 1968 | |
| Indigo Bunting | Cardinalidae | 10 | 2024 | -48% | 1968 | |
| Red-winged Blackbird | Icteridae | 9 | 2024 | -90% | 1968 | |
| Red-eyed Vireo | Vireonidae | 9 | 2024 | +44% | 1968 | |
| Carolina Chickadee | Paridae | 8 | 2024 | +125% | 1969 | |
| Eastern Bluebird | Turdidae | 8 | 2024 | +575% | 1969 | |
| Downy Woodpecker | Picidae | 8 | 2024 | +86% | 1970 | |
| Eastern Towhee | Passerellidae | 7 | 2024 | -21% | 1968 | |
| Common Yellowthroat | Parulidae | 7 | 2024 | +6% | 1968 | |
| Brown-headed Cowbird | Icteridae | 5 | 2024 | -11% | 1968 | |
| Common Grackle | Icteridae | 5 | 2024 | -92% | 1968 | |
| Tree Swallow | Hirundinidae | 5 | 2023 | +40% | 2007 | |
| Red-bellied Woodpecker | Picidae | 4 | 2024 | +15% | 1968 | |
| Orchard Oriole | Icteridae | 4 | 2018 | +0% | 1969 | |
| White-breasted Nuthatch | Sittidae | 4 | 2024 | +200% | 1971 | |
| Turkey Vulture | Cathartidae | 4 | 2018 | +40% | 1974 | |
| Rock Pigeon | Columbidae | 3 | 2018 | -92% | 1968 | |
| Eastern Phoebe | Tyrannidae | 3 | 2024 | +38% | 1968 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.