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Species · South Carolina · BBS 2026 Release · 1966–2025

White-breasted Nuthatch Population Trend in South Carolina

All statesForest birds

White-breasted Nuthatch in South Carolina has surged: up 314% on the route-weighted index since 1969.

+314%Since 1969TrendPercent 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 →
40Routes In StateSurvey routesHow many standard-protocol BBS routes contributed counts. More routes means a steadier, better-sampled index; very thin coverage is suppressed.Full methodology →
57YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable White-breasted Nuthatch Trends in South CarolinaNotable 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 South Carolina: up 314% on the route-weighted index since 1969.

White-breasted Nuthatch Population Forecast in South Carolina

If the recent trend holds, White-breasted Nuthatch in South Carolina is projected to stay roughly flat through 2030, near 1.7 (95% range 0.95–2.4). A 5-year backtest shows a typical error of ±19.3%, with 80% of held-out values landing inside the 95% band.

+3%Change by 2030TrendPercent 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 →
1.7Projected 2030 indexProjected indexThe central forecast of the abundance index if the recent trend continues. A projection of the current trajectory, not a prediction.Full methodology →
0.95–2.495% 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 →
±19.3%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 South Carolina is projected to stay roughly flat through 2030, near 1.7 (95% range 0.95–2.4). A 5-year backtest shows a typical error of ±19.3%, with 80% of held-out values landing inside the 95% band.19672030
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 →
20261.60.852.3
20271.60.882.3
20281.60.912.3
20291.60.932.3
20301.70.952.4

White-breasted Nuthatch Survey Routes in South Carolina

Routes recording White-breasted Nuthatch in South Carolina.
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 →
Barton Creek820221969
Battlecreek820251999
Walterboro520171979
Owings 2520252016
Whitmire420242010
Salem420252010
Dale420251998
Adams Run420251988
Sandhills320252010
Lowrys320252021
Prosperity320222015
Jamestown220151967
Coward220251979
New Holland220251970
Dillon219961996
Plum Branch219881988
Campobello220252011
Kiawah Island220252021
Anderson220182001
Hardeeville120251970
Rome120251981
Holly Hill120251987
Foreston119801980
Wagener120231978
Bishopville119831983

White-breasted Nuthatch Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

Source: USGS North American Breeding Bird Survey, retrieved 2026-08-14.