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Species · Missouri · BBS 2025 Release · 1966–2024

Warbling Vireo Population Trend in Missouri

All statesForest birds

Warbling Vireo in Missouri has edged up: up 18% on the route-weighted index since 1969.

+18%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 →
80Routes 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 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 34% by 2029 — from 2.0 in 2024 to a central estimate of 2.7 (95% range 1.3–4.0). A 5-year backtest shows a typical error of ±48.2%, with 80% of held-out values landing inside the 95% band.

+34%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 →
2.7Projected 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 →
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 →
±48.2%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, Warbling Vireo in Missouri is projected to rise about 34% by 2029 — from 2.0 in 2024 to a central estimate of 2.7 (95% range 1.3–4.0). A 5-year backtest shows a typical error of ±48.2%, with 80% 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 →
20252.61.23.9
20262.61.23.9
20272.61.34.0
20282.61.34.0
20292.71.34.0

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 →
Mcfall2020241994
New Point1020241994
Kahoka21020242002
Lucerne920212016
Woodlandville920242013
Deventer720241967
Sni Mills719901976
Madison720241971
Kahoka719981967
Whitewater720241996
Frankford720241985
Luray720242017
Cp Girardeau520231967
Laclede520241994
Watson520231991
Rockingham420241971
Millwood420241999
Gerald420242013
Union419991990
Danville320241967
Centertown320241976
Bolckow319921967
Tarkio319891968
Kearney320241995
Norborne320232006

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 2026-05-22.