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Species · Arizona · BBS 2025 Release · 1966–2024

Red-breasted Nuthatch Population Trend in Arizona

All statesForest birds

Red-breasted Nuthatch in Arizona has surged: up 204% on the route-weighted index since 1975.

+204%Since 1975
23Routes In State
51Years

Notable Red-breasted Nuthatch Trends in Arizona

long arc increasecomputed index

Red-breasted Nuthatch has surged in Arizona: up 204% on the route-weighted index since 1975.

Red-breasted Nuthatch Population Forecast in Arizona

If the recent trend holds, Red-breasted Nuthatch in Arizona is projected to rise about 59% by 2029 — from 0.37 in 2024 to a central estimate of 0.59 (95% range 0.00–1.2). A 5-year backtest shows a typical error of ±41.4%, with 100% of held-out values landing inside the 95% band.

+59%Change by 2029
0.59Projected 2029 index
0.00–1.295% range
±41.4%Backtest error
19702029
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
20250.580.001.2
20260.580.001.2
20270.590.001.2
20280.590.001.2
20290.590.001.2

Red-breasted Nuthatch Survey Routes in Arizona

Routes recording Red-breasted Nuthatch in Arizona.
Dry Park1120241992
Mt. Graham920231995
Tsaile620222006
Round Rock319701970
Forest Lakes320061992
Portal220241978
Rucker219961995
Prescott220221976
Aztec Peak219781974
Williams220132013
Tonto Vill.220152014
Kaibito220082008
House Rock119941994
Flagstaff120161988
Sawmill120081989
Mormon Lake119751974
Zeniff119841984
Blue119881974
Pinetop120221993
Alpine120231992
Happy Jack120161986
Carr Mtn120041990
Sprucedale120101994

Red-breasted Nuthatch Population Trend in Other States

alaskacaliforniacoloradoconnecticutidahoillinoisindianakansasmainemarylandmassachusettsmichiganminnesotamontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseeutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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