BirdAnalyst
Species · New York · BBS 2026 Release · 1966–2025

Yellow-billed Cuckoo Population Trend in New York

All statesForest birds

Yellow-billed Cuckoo in New York has declined: down 34% on the route-weighted index since 1968.

-34%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 →
108Routes 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 New YorkNotable 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 New York. See the full index history below.

Yellow-billed Cuckoo Population Forecast in New York

If the recent trend holds, Yellow-billed Cuckoo in New York is projected to rise about 168% by 2030 — from 0.13 in 2025 to a central estimate of 0.35 (95% range 0.00–0.80). A 5-year backtest shows a typical error of ±70.5%, with 100% of held-out values landing inside the 95% band.

+168%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 →
0.35Projected 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 →
0.00–0.8095% 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 →
±70.5%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 New York is projected to rise about 168% by 2030 — from 0.13 in 2025 to a central estimate of 0.35 (95% range 0.00–0.80). A 5-year backtest shows a typical error of ±70.5%, 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 →
20260.350.000.80
20270.350.000.80
20280.350.000.80
20290.350.000.80
20300.350.000.80

Yellow-billed Cuckoo Survey Routes in New York

Routes recording Yellow-billed Cuckoo in New York.
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 →
Orange Lake919881988
W Shokan720181968
St Regis Fls520092006
Cobleskill420231967
Westhampton320051967
Westbrookvle320181969
Meridale320251979
Rushville320211975
Branchport320231967
Mendon320181967
Gainesville320211968
Oneida320091974
Clinton319721971
Huntington219811967
Rhinebeck220241967
Mt Hope219881967
Medusa220211970
Duanesburg220151973
Platte Cove220111981
Oriskany Fls220192011
Oxford219691969
E Newark220231976
Romulus219921991
Orleans220161971
Randolph220131970

Yellow-billed Cuckoo Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanevadanew-hampshirenew-jerseynew-mexiconorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasutahvermontvirginiawest-virginiawisconsinwyoming

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