BirdAnalyst
Species · Kansas · BBS 2025 Release · 1966–2024

Yellow-billed Cuckoo Population Trend in Kansas

All statesGeneralists

Yellow-billed Cuckoo in Kansas has held roughly steady: down 1% on the route-weighted index since 1969.

-1%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 →
63Routes 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 KansasNotable 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 Kansas. See the full index history below.

Yellow-billed Cuckoo Population Forecast in Kansas

If the recent trend holds, Yellow-billed Cuckoo in Kansas is projected to stay roughly flat through 2029, near 6.8 (95% range 2.8–11). A 5-year backtest shows a typical error of ±10.7%, with 100% of held-out values landing inside the 95% band.

+5%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 →
6.8Projected 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 →
2.8–1195% 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 →
±10.7%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 Kansas is projected to stay roughly flat through 2029, near 6.8 (95% range 2.8–11). A 5-year backtest shows a typical error of ±10.7%, 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 →
20256.82.811
20266.82.811
20276.82.811
20286.82.811
20296.82.811

Yellow-billed Cuckoo Survey Routes in Kansas

Routes recording Yellow-billed Cuckoo in Kansas.
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 →
Trading Post1820242000
Wellington1620241968
Chapman1319811967
Kanopolis1220241968
Bucyrus1220242022
Buckeye1120231967
Morehead1120242000
Reece1120242000
Berwet1120242000
Lincolnville1120242002
Humboldt1020221968
Wreford920241967
Covert920241967
Hopewell920142000
Dover820221967
Seneca820221967
Jewell820051967
Severance820242000
Solomon820191982
Melrose720231967
Thrall719701967
Grantville720221967
Pittsburg720212000
Le Loup720212000
Longton720211976

Yellow-billed Cuckoo Population Trend in Other States

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

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