Guild · Pennsylvania · BBS 2025 Release · 1966–2024
Generalists In Pennsylvania
54 species in this guild. As a group they are -42% since 1968.
Guild Signals
guild collapsecomputed index
Generalists as a group have declined in Pennsylvania, down 42% since 1968.
Forecast
If the recent trend holds, Generalists in Pennsylvania is projected to fall about 14% by 2029 — from 8.5 in 2024 to a central estimate of 7.4 (95% range 6.0–8.8). A 5-year backtest shows a typical error of ±4.4%, with 100% of held-out values landing inside the 95% band.
-14%Change by 2029
7.4Projected 2029 index
6.0–8.895% range
±4.4%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 7.7 | 6.3 | 9.1 |
| 2026 | 7.6 | 6.2 | 9.0 |
| 2027 | 7.5 | 6.1 | 9.0 |
| 2028 | 7.5 | 6.0 | 8.9 |
| 2029 | 7.4 | 6.0 | 8.8 |
Member Species In Pennsylvania
| Yellow-breasted Chat | Icteriidae | -95% |
| White-throated Sparrow | Passerellidae | -94% |
| Ruffed Grouse | Phasianidae | -82% |
| Blue Grosbeak | Cardinalidae | -77% |
| Common Grackle | Icteridae | -75% |
| Black-billed Cuckoo | Cuculidae | -73% |
| House Sparrow | Passeridae | -72% |
| Eastern Screech-Owl | Strigidae | -72% |
| Red-winged Blackbird | Icteridae | -63% |
| Rock Pigeon | Columbidae | -62% |
| Field Sparrow | Passerellidae | -62% |
| American Goshawk | Accipitridae | -61% |
| Summer Tanager | Cardinalidae | -53% |
| Belted Kingfisher | Alcedinidae | -52% |
| Sharp-shinned Hawk | Accipitridae | -48% |
| Purple Finch | Fringillidae | -45% |
| Baltimore Oriole | Icteridae | -43% |
| European Starling | Sturnidae | -38% |
| Brown-headed Cowbird | Icteridae | -38% |
| Great Horned Owl | Strigidae | -36% |
| Brown Thrasher | Mimidae | -35% |
| Northern Harrier | Accipitridae | -29% |
| American Goldfinch | Fringillidae | -25% |
| Eastern Towhee | Passerellidae | -9% |
| American Crow | Corvidae | -6% |
| Chipping Sparrow | Passerellidae | +1% |
| Song Sparrow | Passerellidae | +9% |
| Indigo Bunting | Cardinalidae | +15% |
| Northern Mockingbird | Mimidae | +32% |
| Blue Jay | Corvidae | +37% |
| Yellow-billed Cuckoo | Cuculidae | +49% |
| Broad-winged Hawk | Accipitridae | +52% |
| Swamp Sparrow | Passerellidae | +57% |
| Rose-breasted Grosbeak | Cardinalidae | +62% |
| Scarlet Tanager | Cardinalidae | +65% |
| Northern Cardinal | Cardinalidae | +80% |
| American Kestrel | Falconidae | +85% |
| Gray Catbird | Mimidae | +87% |
| Mourning Dove | Columbidae | +108% |
| Barred Owl | Strigidae | +122% |
| Fish Crow | Corvidae | +172% |
| Orchard Oriole | Icteridae | +252% |
| Turkey Vulture | Cathartidae | +337% |
| Red-shouldered Hawk | Accipitridae | +344% |
| Cedar Waxwing | Bombycillidae | +348% |
| Cooper's Hawk | Accipitridae | +366% |
| Ruby-throated Hummingbird | Trochilidae | +404% |
| Osprey | Pandionidae | +481% |
| Black Vulture | Cathartidae | +490% |
| Red-tailed Hawk | Accipitridae | +520% |
| Bald Eagle | Accipitridae | +618% |
| Wild Turkey | Phasianidae | 11× |
| Common Raven | Corvidae | 21× |
| House Finch | Fringillidae | 70× |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.