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Species · Georgia · BBS 2025 Release · 1966–2024

Brown-headed Nuthatch Population Trend in Georgia

All statesForest birds

Brown-headed Nuthatch in Georgia has edged up: up 19% on the route-weighted index since 1968.

+19%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 →
110Routes 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 →
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 Brown-headed Nuthatch Trends in GeorgiaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

No notable trend signals for Brown-headed Nuthatch in Georgia. See the full index history below.

Brown-headed Nuthatch Population Forecast in Georgia

If the recent trend holds, Brown-headed Nuthatch in Georgia is projected to rise about 44% by 2029 — from 2.4 in 2024 to a central estimate of 3.5 (95% range 2.2–4.9). A 5-year backtest shows a typical error of ±18.3%, with 100% of held-out values landing inside the 95% band.

+44%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 →
3.5Projected 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 →
2.2–4.995% 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 →
±18.3%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, Brown-headed Nuthatch in Georgia is projected to rise about 44% by 2029 — from 2.4 in 2024 to a central estimate of 3.5 (95% range 2.2–4.9). A 5-year backtest shows a typical error of ±18.3%, 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 →
20253.52.14.8
20263.52.14.8
20273.52.14.9
20283.52.24.9
20293.52.24.9

Brown-headed Nuthatch Survey Routes in Georgia

Routes recording Brown-headed Nuthatch in Georgia.
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 →
Stoney Point1820072007
Hiram1520181975
Stockbridge1520231975
Workmore1320191978
Kite Lake1220232015
Juliette1120241975
Grovetown1020211975
Piedmont Nwr1020031991
Baxley920181967
Deepstep920231975
Hollonville 2920222019
Carrs Station920242008
Woodstock920212006
Hollonville820031973
Keller819931975
Bowdon720241974
Tazewell720241967
Guyton619931966
Cartersville620241978
Dickey620182007
Pleasant Hill620242005
Courthouse520241966
Wrightsville520241966
Doles520191975
Union520232011

Brown-headed Nuthatch Population Trend in Other States

alabamaarkansasdelawarefloridalouisianamarylandmississippinorth-carolinaoklahomasouth-carolinatennesseetexasvirginia

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