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Species · Georgia · BBS 2025 Release · 1966–2024

Yellow-billed Cuckoo Population Trend in Georgia

All statesGeneralists

Yellow-billed Cuckoo in Georgia has edged down: down 22% on the route-weighted index since 1968.

-22%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 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 35% by 2029 — from 4.9 in 2024 to a central estimate of 3.2 (95% range 0.43–6.0). A 5-year backtest shows a typical error of ±17.3%, with 100% of held-out values landing inside the 95% band.

-35%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 →
3.2Projected 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 →
0.43–6.095% 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 →
±17.3%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 35% by 2029 — from 4.9 in 2024 to a central estimate of 3.2 (95% range 0.43–6.0). A 5-year backtest shows a typical error of ±17.3%, 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 →
20253.40.686.2
20263.40.616.2
20273.30.556.1
20283.30.496.0
20293.20.436.0

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 →
Barges2520242011
Carrs Station1820242008
Lincolnton 21620242018
Headlight1320242011
Lincolnton1220171966
Rock Branch1220242005
Grovetown1020191975
Irwinton1020242016
Juliette920241975
Workmore920191978
Colonels Island920192005
Union920232011
Curry Hill920192006
Fowlstown820161967
Courthouse820241966
Maxeys820241966
Macon820241975
Shannon820191975
Wadley820241977
Millen820242006
White Hill820242005
Baxley720191966
Hawkinsville720241966
Jacksonboro720241967
Rutledge720241975

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 2026-05-22.