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

Western Wood-Pewee In Sonoran and Mojave Deserts

All regionsSonoran and Mojave DesertsAerial insectivores

Western Wood-Pewee in Sonoran and Mojave Deserts has fallen sharply: down 57% on the route-weighted index since 1971.

-57%Since 1971
22Routes In Region
52Years

Notable Signals

long arc declinecomputed index

Western Wood-Pewee has fallen sharply in Sonoran and Mojave Deserts: down 57% on the route-weighted index since 1971.

Forecast

If the recent trend holds, Western Wood-Pewee in Sonoran and Mojave Deserts is projected to fall about 25% by 2029 — from 0.37 in 2024 to a central estimate of 0.28 (95% range 0.00–0.65). A 5-year backtest shows a typical error of ±55.1%, with 100% of held-out values landing inside the 95% band.

-25%Change by 2029
0.28Projected 2029 index
0.00–0.6595% range
±55.1%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
20250.270.000.65
20260.270.000.65
20270.270.000.65
20280.270.000.65
20290.280.000.65

Routes In Sonoran and Mojave Deserts

Routes recording Western Wood-Pewee in Sonoran and Mojave Deserts.
Kelso ValleyCALIFORNIA72024
BlytheCALIFORNIA51974
Squaw PeakARIZONA41968
FlorenceARIZONA31971
Cibola LakeARIZONA31994
PearblossomCALIFORNIA32024
WildroseCALIFORNIA21994
OnyxCALIFORNIA22015
BrawleyCALIFORNIA21971
LagunaARIZONA11972
CoolidgeARIZONA11985
RivieraARIZONA12021
Anza BorregoCALIFORNIA12024
InyokernCALIFORNIA12002
Alamo RiverCALIFORNIA11990
Imperial DamCALIFORNIA11973
CimaCALIFORNIA11975
Lone PineCALIFORNIA12023
Joshua TreeCALIFORNIA12002
Val Of FireNEVADA11991
NelsonNEVADA12007
Ash MeadowsNEVADA12019

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