BirdAnalyst
Species · BCR 33 · BBS 2025 Release · 1966–2024

Wilson's Warbler In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsForest birds

Wilson's Warbler in Sonoran and Mojave Deserts has declined: down 49% on the route-weighted index since 1973.

-49%Since 1973
6Routes In Region
23Years

Notable Signals

No notable trend signals for Wilson's Warbler in Sonoran and Mojave Deserts. See the full index history below.

Forecast

If the recent trend holds, Wilson's Warbler in Sonoran and Mojave Deserts is projected to stay roughly flat through 2029, near 0.06 (95% range 0.00–0.22). A 5-year backtest shows a typical error of ±56.7%, with 100% of held-out values landing inside the 95% band.

-6%Change by 2029
0.06Projected 2029 index
0.00–0.2295% range
±56.7%Backtest error
19712029
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
20250.070.000.23
20260.070.000.23
20270.070.000.22
20280.060.000.22
20290.060.000.22

Routes In Sonoran and Mojave Deserts

Routes recording Wilson's Warbler in Sonoran and Mojave Deserts.
Anza BorregoCALIFORNIA51990
Kelso ValleyCALIFORNIA22024
OnyxCALIFORNIA11980
PearblossomCALIFORNIA11977
Lone PineCALIFORNIA12004
BrawleyCALIFORNIA11972

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