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Species · Georgia · BBS 2026 Release · 1966–2025

Worm-eating Warbler Population Trend in Georgia

All statesForest birds

Worm-eating Warbler in Georgia has edged down: down 18% on the route-weighted index since 1975.

-18%Since 1975TrendPercent 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 →
17Routes 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 →
48YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Worm-eating Warbler 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 Worm-eating Warbler in Georgia. See the full index history below.

Worm-eating Warbler Population Forecast in Georgia

If the recent trend holds, Worm-eating Warbler in Georgia is projected to rise about 82% by 2030 — from 0.06 in 2025 to a central estimate of 0.11 (95% range 0.01–0.21). A 5-year backtest shows a typical error of ±83.3%, with 100% of held-out values landing inside the 95% band.

+82%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 →
0.11Projected 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 →
0.01–0.2195% 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 →
±83.3%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, Worm-eating Warbler in Georgia is projected to rise about 82% by 2030 — from 0.06 in 2025 to a central estimate of 0.11 (95% range 0.01–0.21). A 5-year backtest shows a typical error of ±83.3%, with 100% of held-out values landing inside the 95% band.19732030
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 →
20260.110.010.21
20270.110.010.21
20280.110.010.21
20290.110.010.21
20300.110.010.21

Worm-eating Warbler Survey Routes in Georgia

Routes recording Worm-eating Warbler 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 →
Baxter220181981
Mountain Cty220251975
Piedmont Nwr219951994
Athens220252025
Cartersville220241987
Bowdon120082002
Sharon120182018
Tazewell119791977
Shannon119781978
Courthouse120141974
Hiram119871987
Whitesburg120011993
Washington119891989
Pleasant Hill120232005
Amos Mill120222011
Workmore120052005
Baldwin120221973

Worm-eating Warbler Population Trend in Other States

alabamaarkansasconnecticutdelawareillinoisindianaiowakentuckylouisianamarylandmassachusettsmississippimissourinew-hampshirenew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawest-virginiawisconsin

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