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Species · BCR 14 · BBS 2025 Release · 1966–2024

White-breasted Nuthatch In Atlantic Northern Forest

All regionsAtlantic Northern ForestForest birds

White-breasted Nuthatch in Atlantic Northern Forest has surged: up 105% on the route-weighted index since 1968.

+105%Since 1968TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
142Routes In RegionSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
58YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable SignalsNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

White-breasted Nuthatch has surged in Atlantic Northern Forest: up 105% on the route-weighted index since 1968.

White-breasted Nuthatch In Atlantic Northern Forest Population Forecast

If the recent trend holds, White-breasted Nuthatch in Atlantic Northern Forest is projected to fall about 12% by 2029 — from 3.6 in 2024 to a central estimate of 3.1 (95% range 2.2–4.1). A 5-year backtest shows a typical error of ±16.3%, with 100% of held-out values landing inside the 95% band.

-12%Change by 2029TrendPercent change in the route-weighted abundance index between a smoothed baseline window and the most recent one. It tracks direction, not absolute population.Full methodology →
3.1Projected 2029 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
2.2–4.195% range95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
±16.3%Backtest errorBacktest errorTypical error when we hold out the most recent years, forecast them, and compare to what actually happened. Lower means a more trustworthy projection.Full methodology →
If the recent trend holds, White-breasted Nuthatch in Atlantic Northern Forest is projected to fall about 12% by 2029 — from 3.6 in 2024 to a central estimate of 3.1 (95% range 2.2–4.1). A 5-year backtest shows a typical error of ±16.3%, with 100% of held-out values landing inside the 95% band.19662029
Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.
YearProjected indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →95% low95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →95% high95% rangeThe 95% uncertainty band around the projection at the forecast horizon. The true value should land inside it most of the time.Full methodology →
20253.02.14.0
20263.12.14.0
20273.12.14.0
20283.12.24.1
20293.12.24.1

Routes In Atlantic Northern Forest

Routes recording White-breasted Nuthatch in Atlantic Northern Forest.
Recent countThe raw number of individuals recorded on this route in its most recent survey year. A single-route tally, not a trend.Full methodology →
WestbrookMAINE142024
Bowdoin CtrMAINE142021
PittsfieldMASSACHUSETTS142016
PeterboroughNEW-HAMPSHIRE132024
BrooksMAINE112019
ConcordNEW-HAMPSHIRE112024
CanterburyNEW-HAMPSHIRE112024
St Regis FlsNEW-YORK102012
GreenwoodMAINE82024
HermonMAINE82019
Turner 2MAINE82024
Gilmantn I WNEW-HAMPSHIRE82024
S ReadingVERMONT82024
N OrangeMASSACHUSETTS72024
MckeeverNEW-YORK72022
New HartfordCONNECTICUT62024
CornvilleMAINE62024
MontereyMASSACHUSETTS62024
HopkintonNEW-HAMPSHIRE62024
WilmotNEW-HAMPSHIRE62024
Old ForgeNEW-YORK62006
NewcastleMAINE52024
TurnerMAINE52010
ManchesterMAINE51995
BenedictaMAINE52022

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