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

Arid-land Birds In Washington

All statesWashington

3 species in this guild. As a group they are +84% since 1970.

Guild Signals

No notable trend signals for arid-land birds in Washington. See the full index history below.

Forecast

If the recent trend holds, Arid-land birds in Washington is projected to rise about 62% by 2029 — from 0.46 in 2024 to a central estimate of 0.74 (95% range 0.00–3.2). A 5-year backtest shows a typical error of ±52.5%, with 100% of held-out values landing inside the 95% band.

+62%Change by 2029
0.74Projected 2029 index
0.00–3.295% range
±52.5%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
20250.750.003.2
20260.750.003.2
20270.740.003.2
20280.740.003.2
20290.740.003.2

Member Species In Washington

Arid-land birds species in Washington.
Sagebrush SparrowPasserellidae-8%
Sage ThrasherMimidae+89%
Brewer's SparrowPasserellidae+302%

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