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Species · Missouri · BBS 2025 Release · 1966–2024

Yellow-billed Cuckoo Population Trend in Missouri

All statesGeneralists

Yellow-billed Cuckoo in Missouri has edged down: down 22% on the route-weighted index since 1969.

-22%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 →
57YearsYears 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 11% by 2029 — from 6.0 in 2024 to a central estimate of 5.3 (95% range 0.00–11). A 5-year backtest shows a typical error of ±13.1%, with 100% of held-out values landing inside the 95% band.

-11%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 →
5.3Projected 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 →
0.00–1195% 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 →
±13.1%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 Missouri is projected to fall about 11% by 2029 — from 6.0 in 2024 to a central estimate of 5.3 (95% range 0.00–11). A 5-year backtest shows a typical error of ±13.1%, with 100% of held-out values landing inside the 95% band.19672029
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 →
20255.70.3011
20265.60.2011
20275.50.1011
20285.40.0011
20295.30.0011

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 →
Filley1820241975
Barks1820241994
Ironton1619801972
Frankford1620241985
Pulaski1320241974
Graydon1320241967
Williamsvill1220241994
Osage Beach1220241997
Lincoln1220242013
Diamond1220242015
Ohio1120241972
Centerville1120241994
Cascade1020241967
Auburn1020242014
Whitewater920241996
Eugene920242013
Gerald920242013
Palace920242014
Deventer820231967
Sweden820241968
Wesco820241972
Clementine820021974
Sni Mills819901967
Huntsville820241967
Crane820241994

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 2026-05-22.