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Species · Missouri · BBS 2026 Release · 1966–2025

Warbling Vireo Population Trend in Missouri

All statesForest birds

Warbling Vireo in Missouri has edged up: up 12% on the route-weighted index since 1969.

+12%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 →
81Routes 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 Warbling Vireo 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 Warbling Vireo in Missouri. See the full index history below.

Warbling Vireo Population Forecast in Missouri

If the recent trend holds, Warbling Vireo in Missouri is projected to rise about 30% by 2030 — from 2.0 in 2025 to a central estimate of 2.6 (95% range 1.3–4.0). A 5-year backtest shows a typical error of ±27.9%, with 100% of held-out values landing inside the 95% band.

+30%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 →
2.6Projected 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 →
1.3–4.095% 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 →
±27.9%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, Warbling Vireo in Missouri is projected to rise about 30% by 2030 — from 2.0 in 2025 to a central estimate of 2.6 (95% range 1.3–4.0). A 5-year backtest shows a typical error of ±27.9%, 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 →
20262.61.23.9
20272.61.23.9
20282.61.23.9
20292.61.34.0
20302.61.34.0

Warbling Vireo Survey Routes in Missouri

Routes recording Warbling Vireo 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 →
Luray1720252017
New Point1320251994
Kahoka21020242002
Mcfall820251994
Sni Mills719901976
Madison720241971
Kahoka719981967
Frankford720251985
Rensselaer520251971
Rockingham520251971
Laclede520251994
Kearney520251995
Watson520231991
Woodlandville520252013
Doe Run520252015
Deventer420251967
Danville420251967
Whitewater420251996
Barks420251994
Osage Beach420252000
New Hampton420252014
Auburn420252014
Union419991990
Centertown320241976
Bolckow319921967

Warbling Vireo Population Trend in Other States

alabamaalaskaarizonaarkansascaliforniacoloradoconnecticutdelawareidahoillinoisindianaiowakansaskentuckylouisianamainemarylandmassachusettsmichiganminnesotamississippimontananebraskanevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawisconsinwyoming

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