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Species · California · BBS 2025 Release · 1966–2024

White-breasted Nuthatch Population Trend in California

All statesForest birds

White-breasted Nuthatch in California has risen sharply: up 66% on the route-weighted index since 1970.

+66%Since 1970
169Routes In State
56Years

Notable White-breasted Nuthatch Trends in California

long arc increasecomputed index

White-breasted Nuthatch has risen sharply in California: up 65% on the route-weighted index since 1970.

White-breasted Nuthatch Population Forecast in California

If the recent trend holds, White-breasted Nuthatch in California is projected to stay roughly flat through 2029, near 3.9 (95% range 2.7–5.1). A 5-year backtest shows a typical error of ±21.9%, with 80% of held-out values landing inside the 95% band.

+8%Change by 2029
3.9Projected 2029 index
2.7–5.195% range
±21.9%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
20253.82.65.0
20263.82.75.0
20273.92.75.0
20283.92.75.1
20293.92.75.1

White-breasted Nuthatch Survey Routes in California

Routes recording White-breasted Nuthatch in California.
Gold Hill3020241975
Lockwood2420241972
Bass Lake2320191972
Yokohl Val2319971972
Tres Pinos 22320112005
Yolla Bolly2220241974
White River2019921972
Lassen Park1919771972
Lake Berryessa1920242023
Adelaida1820241970
Tehama1820221973
Jackson1719921974
Copperopolis1620241975
Moraga1520241978
Coyote1420241973
Folsom1320241984
Creston1320241976
Angelus Oaks1320171989
Iron Gate1320191988
Chilcoot1320241998
Cal Hot Spgs1220191993
Tres Pinos1120031968
Santa Ynez1120191972
Crowder Flat1120192002
Orange Cove1020161972

White-breasted Nuthatch Population Trend in Other States

alabamaarizonaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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