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Species · Kansas · BBS 2026 Release · 1966–2025

Yellow-throated Vireo Population Trend in Kansas

All statesForest birds

Yellow-throated Vireo in Kansas has surged: up 557% on the route-weighted index since 1988.

+557%Since 1988TrendPercent 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 →
17Routes 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 →
28YearsYears 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-throated Vireo 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-throated Vireo in Kansas. See the full index history below.

Yellow-throated Vireo Population Forecast in Kansas

If the recent trend holds, Yellow-throated Vireo in Kansas is projected to rise about 11% by 2030 — from 0.21 in 2025 to a central estimate of 0.24 (95% range 0.12–0.35). A 5-year backtest shows a typical error of ±16.7%, with 80% of held-out values landing inside the 95% band.

+11%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 →
0.24Projected 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 →
0.12–0.3595% 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 →
±16.7%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-throated Vireo in Kansas is projected to rise about 11% by 2030 — from 0.21 in 2025 to a central estimate of 0.24 (95% range 0.12–0.35). A 5-year backtest shows a typical error of ±16.7%, with 80% of held-out values landing inside the 95% band.19772030
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 →
20260.220.100.33
20270.220.110.34
20280.230.110.34
20290.230.120.35
20300.240.120.35

Yellow-throated Vireo Survey Routes in Kansas

Routes recording Yellow-throated Vireo 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 →
Bucyrus320252023
Seneca320222002
Severance220232000
Le Loup220212001
Grantville220192007
Dalton120182018
Olathe120141981
Dover120222013
Barclay119771977
Wreford120242005
Pittsburg120182018
Morehead120232004
Trading Post120252005
Rock Creek120211988
Hanover120212016
Olsburg120252024
Rock Creek 2120252025

Yellow-throated Vireo Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimissourinebraskanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooklahomapennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawest-virginiawisconsin

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