BBS Route · Pennsylvania · BCR 29
Aspers Bird Survey Route
A standard 50-stop Breeding Bird Survey route. 86 species recorded across 19 survey years, no longer active.
86Species Recorded
19Years Surveyed
1968–1989Span
3Observers
Bird Species Found on Pennsylvania Aspers
Top 40 of 86 species by most recent count. Each links to its species trend.
| History | ||||||
|---|---|---|---|---|---|---|
| Common Grackle | Icteridae | 191 | 1989 | -54% | 1970 | |
| European Starling | Sturnidae | 187 | 1989 | -36% | 1970 | |
| American Robin | Turdidae | 153 | 1989 | +61% | 1970 | |
| House Sparrow | Passeridae | 98 | 1989 | -22% | 1970 | |
| Red-winged Blackbird | Icteridae | 78 | 1989 | -50% | 1970 | |
| Mourning Dove | Columbidae | 52 | 1989 | +108% | 1970 | |
| Rock Pigeon | Columbidae | 43 | 1989 | -20% | 1970 | |
| Chimney Swift | Apodidae | 42 | 1989 | -11% | 1970 | |
| Barn Swallow | Hirundinidae | 39 | 1989 | -46% | 1970 | |
| American Crow | Corvidae | 38 | 1989 | -2% | 1970 | |
| House Finch | Fringillidae | 34 | 1989 | +274% | 1983 | |
| Mallard | Anatidae | 31 | 1989 | +65% | 1970 | |
| Northern Cardinal | Cardinalidae | 29 | 1989 | +57% | 1970 | |
| Eastern Meadowlark | Icteridae | 25 | 1989 | +43% | 1970 | |
| Northern Mockingbird | Mimidae | 25 | 1989 | +240% | 1970 | |
| Field Sparrow | Passerellidae | 21 | 1989 | +233% | 1970 | |
| Song Sparrow | Passerellidae | 20 | 1989 | +79% | 1970 | |
| Chipping Sparrow | Passerellidae | 18 | 1989 | +20% | 1970 | |
| Northern House Wren | Troglodytidae | 15 | 1989 | +20% | 1970 | |
| Gray Catbird | Mimidae | 11 | 1989 | -35% | 1970 | |
| Blue Jay | Corvidae | 10 | 1989 | -26% | 1970 | |
| Brown-headed Cowbird | Icteridae | 9 | 1989 | +18% | 1970 | |
| Eastern Phoebe | Tyrannidae | 8 | 1989 | +140% | 1970 | |
| Canada Goose | Anatidae | 8 | 1984 | -74% | 1983 | |
| Killdeer | Charadriidae | 7 | 1989 | +100% | 1970 | |
| Eastern Towhee | Passerellidae | 7 | 1989 | +7% | 1970 | |
| Indigo Bunting | Cardinalidae | 7 | 1989 | -35% | 1970 | |
| Wood Thrush | Turdidae | 7 | 1989 | -12% | 1971 | |
| Yellow-billed Cuckoo | Cuculidae | 7 | 1983 | +275% | 1974 | |
| Tufted Titmouse | Paridae | 6 | 1989 | +117% | 1970 | |
| Purple Martin | Hirundinidae | 5 | 1988 | -79% | 1971 | |
| Cedar Waxwing | Bombycillidae | 5 | 1989 | +400% | 1977 | |
| Grasshopper Sparrow | Passerellidae | 4 | 1989 | +67% | 1970 | |
| Black Vulture | Cathartidae | 4 | 1988 | n/a | n/a | |
| Ring-necked Pheasant | Phasianidae | 3 | 1989 | -75% | 1970 | |
| Turkey Vulture | Cathartidae | 3 | 1988 | +133% | 1973 | |
| Great Crested Flycatcher | Tyrannidae | 3 | 1988 | +120% | 1970 | |
| Eastern Wood-Pewee | Tyrannidae | 3 | 1988 | +14% | 1970 | |
| Common Yellowthroat | Parulidae | 3 | 1988 | +57% | 1970 | |
| Brown Thrasher | Mimidae | 3 | 1989 | -13% | 1970 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22. A route is a sample, not a census.