BirdAnalyst
Guild · Pennsylvania · BBS 2025 Release · 1966–2024

Grassland Birds In Pennsylvania

All statesPennsylvania

10 species in this guild. As a group they are -81% since 1968.

Guild Signals

guild collapsecomputed index

Grassland birds as a group have collapsed in Pennsylvania, down 81% since 1968.

Forecast

If the recent trend holds, Grassland birds in Pennsylvania is projected to fall about 86% by 2029 — from 0.90 in 2024 to a central estimate of 0.13 (95% range 0.00–0.87). A 5-year backtest shows a typical error of ±55.4%, with 100% of held-out values landing inside the 95% band.

-86%Change by 2029
0.13Projected 2029 index
0.00–0.8795% range
±55.4%Backtest error
19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected index95% low95% high
20250.340.001.1
20260.290.001.0
20270.240.000.98
20280.180.000.93
20290.130.000.87

Member Species In Pennsylvania

Grassland birds species in Pennsylvania.
Northern BobwhiteOdontophoridae-99%
Ring-necked PheasantPhasianidae-99%
Vesper SparrowPasserellidae-96%
Upland SandpiperScolopacidae-95%
Henslow's SparrowPasserellidae-94%
Eastern MeadowlarkIcteridae-88%
Grasshopper SparrowPasserellidae-87%
Savannah SparrowPasserellidae-70%
Horned LarkAlaudidae-62%
BobolinkIcteridae-36%

Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.