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Species · Georgia · BBS 2026 Release · 1966–2025

Yellow-billed Cuckoo Population Trend in Georgia

All statesForest birds

Yellow-billed Cuckoo in Georgia has edged down: down 17% on the route-weighted index since 1968.

-17%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 →
59YearsYears surveyedNumber of years with at least one standard-protocol run in this geography. A longer record makes the trend more reliable.Full methodology →

Notable Yellow-billed Cuckoo 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 Yellow-billed Cuckoo in Georgia. See the full index history below.

Yellow-billed Cuckoo Population Forecast in Georgia

If the recent trend holds, Yellow-billed Cuckoo in Georgia is projected to fall about 26% by 2030 — from 4.3 in 2025 to a central estimate of 3.2 (95% range 0.45–6.0). A 5-year backtest shows a typical error of ±12.3%, with 100% of held-out values landing inside the 95% band.

-26%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 →
3.2Projected 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 →
0.45–6.095% 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 →
±12.3%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, Yellow-billed Cuckoo in Georgia is projected to fall about 26% by 2030 — from 4.3 in 2025 to a central estimate of 3.2 (95% range 0.45–6.0). A 5-year backtest shows a typical error of ±12.3%, with 100% of held-out values landing inside the 95% band.19662030
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 →
20263.40.696.2
20273.40.636.1
20283.30.576.1
20293.30.516.0
20303.20.456.0

Yellow-billed Cuckoo Survey Routes in Georgia

Routes recording Yellow-billed Cuckoo 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 →
Tazewell1420251967
Dover1320251976
Barges1320252011
Lincolnton1220171966
Lincolnton 21120252018
Courthouse1020251966
Henderson1020251973
Grovetown1020191975
Wadley920251977
Council920252012
Colonels Island920192005
Minter Tweed920252006
Curry Hill920192006
Fowlstown820161967
Wrightsville820251966
Maxeys820241966
Shannon820191975
White Hill820252005
Ousley820252015
Baxley720191966
Fitzgerald720251966
Hawkinsville720241966
Philema720252010
Irwinton720252016
Amos Mill720222011

Yellow-billed Cuckoo Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawest-virginiawisconsinwyoming

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