BirdAnalyst
Species · BCR 34 · BBS 2025 Release · 1966–2024

Acorn Woodpecker In Sierra Madre Occidental

All regionsSierra Madre OccidentalForest birds

Acorn Woodpecker in Sierra Madre Occidental has increased: up 42% on the route-weighted index since 1970.

+42%Since 1970
26Routes In Region
56Years

Notable Signals

No notable trend signals for Acorn Woodpecker in Sierra Madre Occidental. See the full index history below.

Forecast

If the recent trend holds, Acorn Woodpecker in Sierra Madre Occidental is projected to stay roughly flat through 2029, near 5.6 (95% range 0.00–11). A 5-year backtest shows a typical error of ±13.9%, with 100% of held-out values landing inside the 95% band.

+5%Change by 2029
5.6Projected 2029 index
0.00–1195% range
±13.9%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
20255.60.0011
20265.60.0011
20275.60.0011
20285.60.0011
20295.60.0011

Routes In Sierra Madre Occidental

Routes recording Acorn Woodpecker in Sierra Madre Occidental.
Tonto Vill.ARIZONA412021
PrescottARIZONA402022
Happy JackARIZONA212024
ReserveNEW-MEXICO202023
PortalARIZONA182024
PatagoniaARIZONA142024
Emory PassNEW-MEXICO142024
AlpineARIZONA92023
Mormon LakeARIZONA81974
PinetopARIZONA82022
Forest LakesARIZONA72024
SprucedaleARIZONA72023
Sunizona 2ARIZONA72024
Carr MtnARIZONA62024
Peña BlancaARIZONA52024
Mt. GrahamARIZONA52023
SunizonaARIZONA41997
RuckerARIZONA32009
Aztec PeakARIZONA21978
Vicks PeakNEW-MEXICO22024
FlagstaffARIZONA12016
BlueARIZONA11990
PomereneARIZONA11980
WilliamsARIZONA12019
Skull ValleyARIZONA12024

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