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Species · Delaware · BBS 2025 Release · 1966–2024

White-breasted Nuthatch Population Trend in Delaware

All statesForest birds

White-breasted Nuthatch in Delaware has surged: up 608% on the route-weighted index since 1979.

+608%Since 1979
10Routes In State
22Years

Notable White-breasted Nuthatch Trends in Delaware

long arc increasecomputed index

White-breasted Nuthatch has surged in Delaware: up 608% on the route-weighted index since 1979.

White-breasted Nuthatch Population Forecast in Delaware

If the recent trend holds, White-breasted Nuthatch in Delaware is projected to stay roughly flat through 2029, near 0.59 (95% range 0.01–1.2). A 5-year backtest shows a typical error of ±84.8%, with 80% of held-out values landing inside the 95% band.

-2%Change by 2029
0.59Projected 2029 index
0.01–1.295% range
±84.8%Backtest error
19722029
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
20250.550.001.1
20260.560.001.1
20270.570.001.1
20280.580.001.2
20290.590.011.2

White-breasted Nuthatch Survey Routes in Delaware

Routes recording White-breasted Nuthatch in Delaware.
Mt Pleasant220112006
Harrington220241979
Millsboro220232021
Milton 2220172017
Wilmington120142003
Frederica120141973
Frankford119911991
Holleyville120031972
Blackbird120242005
Georgetown120102010

White-breasted Nuthatch Population Trend in Other States

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

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