Species · BCR 33 · BBS 2025 Release · 1966–2024
Hairy Woodpecker In Sonoran and Mojave Deserts
Hairy Woodpecker in Sonoran and Mojave Deserts has surged: up 176% on the route-weighted index since 1979.
+176%Since 1979
4Routes In Region
33Years
Notable Signals
long arc increasecomputed index
Hairy Woodpecker has surged in Sonoran and Mojave Deserts: up 176% on the route-weighted index since 1979.
Forecast
If the recent trend holds, Hairy Woodpecker in Sonoran and Mojave Deserts is projected to rise about 21% by 2029 — from 0.07 in 2024 to a central estimate of 0.08 (95% range 0.02–0.14). A 5-year backtest shows a typical error of ±91.5%, with 80% of held-out values landing inside the 95% band.
+21%Change by 2029
0.08Projected 2029 index
0.02–0.1495% range
±91.5%Backtest error
| Year | Projected index | 95% low | 95% high |
|---|---|---|---|
| 2025 | 0.08 | 0.01 | 0.14 |
| 2026 | 0.08 | 0.01 | 0.14 |
| 2027 | 0.08 | 0.02 | 0.14 |
| 2028 | 0.08 | 0.02 | 0.14 |
| 2029 | 0.08 | 0.02 | 0.14 |
Routes In Sonoran and Mojave Deserts
| Kelso Valley | CALIFORNIA | 2 | 2024 |
| Onyx | CALIFORNIA | 1 | 2001 |
| Pearblossom | CALIFORNIA | 1 | 1988 |
| Lone Pine | CALIFORNIA | 1 | 2023 |
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.