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Species · Georgia · BBS 2025 Release · 1966–2024

Prothonotary Warbler Population Trend in Georgia

All statesForest birds

Prothonotary Warbler in Georgia has declined: down 38% on the route-weighted index since 1968.

-38%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 →
80Routes 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 Prothonotary 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 Prothonotary Warbler in Georgia. See the full index history below.

Prothonotary Warbler Population Forecast in Georgia

If the recent trend holds, Prothonotary Warbler in Georgia is projected to fall about 68% by 2029 — from 0.36 in 2024 to a central estimate of 0.12 (95% range 0.00–0.52). A 5-year backtest shows a typical error of ±61.9%, with 100% of held-out values landing inside the 95% band.

-68%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 →
0.12Projected 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 →
0.00–0.5295% 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 →
±61.9%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, Prothonotary Warbler in Georgia is projected to fall about 68% by 2029 — from 0.36 in 2024 to a central estimate of 0.12 (95% range 0.00–0.52). A 5-year backtest shows a typical error of ±61.9%, 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 →
20250.180.000.58
20260.160.000.57
20270.150.000.55
20280.130.000.54
20290.120.000.52

Prothonotary Warbler Survey Routes in Georgia

Routes recording Prothonotary 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 →
Lyons419901966
Jacksonboro420191975
Guyton319871980
Newton320211975
Needmore319831978
Big Oak320072006
Darien219931969
Stockton220241977
Baxley220151966
Everett City220161976
Cartersville219791978
Doles220191975
Baldwin219701970
Macon220231975
Bowdon220151976
Linwood219791979
Tazewell219841967
Washington220241976
Deepstep220221976
Douglas219811979
Headlight220222011
Glenmore220162013
Shiloh220242019
Owensboro220242010
Minter Tweed220242016

Prothonotary Warbler Population Trend in Other States

alabamaarkansasdelawarefloridaillinoisindianaiowakansaskentuckylouisianamarylandmichiganminnesotamississippimissourinew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniasouth-carolinatennesseetexasvirginiawest-virginiawisconsin

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