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Species · Missouri · BBS 2026 Release · 1966–2025

Yellow-billed Cuckoo Population Trend in Missouri

All statesForest birds

Yellow-billed Cuckoo in Missouri has declined: down 26% on the route-weighted index since 1969.

-26%Since 1969TrendPercent 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 →
95Routes 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 MissouriNotable 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 Missouri. See the full index history below.

Yellow-billed Cuckoo Population Forecast in Missouri

If the recent trend holds, Yellow-billed Cuckoo in Missouri is projected to fall about 18% by 2030 — from 6.5 in 2025 to a central estimate of 5.3 (95% range 0.00–11). A 5-year backtest shows a typical error of ±13.2%, with 100% of held-out values landing inside the 95% band.

-18%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 →
5.3Projected 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 →
0.00–1195% 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 →
±13.2%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 Missouri is projected to fall about 18% by 2030 — from 6.5 in 2025 to a central estimate of 5.3 (95% range 0.00–11). A 5-year backtest shows a typical error of ±13.2%, with 100% of held-out values landing inside the 95% band.19672030
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 →
20265.70.3011
20275.60.2011
20285.50.1011
20295.40.0011
20305.30.0011

Yellow-billed Cuckoo Survey Routes in Missouri

Routes recording Yellow-billed Cuckoo in Missouri.
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 →
Miller3120252014
Graydon2220251967
Filley1920251975
Williamsvill1920251994
Hayden1820251975
Ironton1619801972
Harrisonville1620252017
Osage Beach1520251997
Rockingham1420251969
New Point1320251994
Graniteville1320251983
Wesco1220251972
Whitewater1120251996
Diamond1120252015
Ohio1020251972
Centerville1020251994
Kearney1020251995
Rueter 21020252023
Crane920251994
Pulaski820251974
Cassville820251967
Clementine820021974
Sni Mills819901967
Milford820252015
Cp Girardeau720251967

Yellow-billed Cuckoo Population Trend in Other States

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

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