BirdAnalyst
Species · BCR 23 · BBS 2025 Release · 1966–2024

Yellow-billed Cuckoo In Prairie Hardwood Transition

All regionsPrairie Hardwood TransitionGeneralists

Yellow-billed Cuckoo in Prairie Hardwood Transition has held roughly steady: up 2% on the route-weighted index since 1968.

+2%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 →
151Routes In RegionSurvey 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 SignalsNotable 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 Prairie Hardwood Transition. See the full index history below.

Yellow-billed Cuckoo In Prairie Hardwood Transition Population Forecast

If the recent trend holds, Yellow-billed Cuckoo in Prairie Hardwood Transition is projected to rise about 186% by 2029 — from 0.19 in 2024 to a central estimate of 0.53 (95% range 0.00–1.2). A 5-year backtest shows a typical error of ±60.1%, with 80% of held-out values landing inside the 95% band.

+186%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 →
0.53Projected 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 →
0.00–1.295% 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 →
±60.1%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 Prairie Hardwood Transition is projected to rise about 186% by 2029 — from 0.19 in 2024 to a central estimate of 0.53 (95% range 0.00–1.2). A 5-year backtest shows a typical error of ±60.1%, with 80% 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 →
20250.550.001.2
20260.540.001.2
20270.540.001.2
20280.540.001.2
20290.530.001.2

Routes In Prairie Hardwood Transition

Routes recording Yellow-billed Cuckoo in Prairie Hardwood Transition.
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 →
Barry S.G.A. 2MICHIGAN172019
Pt WashingtnWISCONSIN72021
NashvilleMICHIGAN52023
HomerMICHIGAN52021
Hamburg 2MICHIGAN52022
BismarkOHIO51995
UnityWISCONSIN52021
HowardsvilleMICHIGAN42024
MottvilleMICHIGAN42023
Wis RapidsWISCONSIN42022
N FreedomWISCONSIN42023
Mukwonago 2WISCONSIN42023
South BendINDIANA31984
Packertown 2INDIANA32019
LawrenceMICHIGAN32022
Bell OakMICHIGAN32007
PrattvilleMICHIGAN32021
AlmenaMICHIGAN32015
Newburg CrnsWISCONSIN32023
Rolling GrndWISCONSIN32023
Fall RiverWISCONSIN32024
GrimmsWISCONSIN32021
GuilfordILLINOIS22021
KnoxINDIANA22022
MiddleburyINDIANA22021

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