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

Grassland Birds In Washington

All statesWashington

8 species in this guild. As a group they are -22% since 1970.

Guild Signals

No notable trend signals for grassland birds in Washington. See the full index history below.

Forecast

If the recent trend holds, Grassland birds in Washington is projected to stay roughly flat through 2029, near 6.4 (95% range 2.3–11). A 5-year backtest shows a typical error of ±17%, with 100% of held-out values landing inside the 95% band.

+0%Change by 2029
6.4Projected 2029 index
2.3–1195% range
±17%Backtest error
19682029
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
20256.72.611
20266.62.511
20276.52.411
20286.52.411
20296.42.311

Member Species In Washington

Grassland birds species in Washington.
Horned LarkAlaudidae-47%
BobolinkIcteridae+11%
Savannah SparrowPasserellidae+24%
Western MeadowlarkIcteridae+47%
Ring-necked PheasantPhasianidae+59%
Grasshopper SparrowPasserellidae+102%
Vesper SparrowPasserellidae+112%
Lark SparrowPasserellidae+939%

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