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

Warbling Vireo Population Trend in Mississippi

All statesForest birds

Warbling Vireo in Mississippi has declined: down 41% on the route-weighted index since 1969.

-41%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 →
13Routes 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 →
30YearsYears 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 MississippiNotable 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 Mississippi. See the full index history below.

Warbling Vireo Population Forecast in Mississippi

If the recent trend holds, Warbling Vireo in Mississippi is projected to rise about 77% by 2029 — from 0.05 in 2024 to a central estimate of 0.09 (95% range 0.00–0.30). A 5-year backtest shows a typical error of ±90.6%, with 100% of held-out values landing inside the 95% band.

+77%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 →
0.09Projected 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 →
0.00–0.3095% 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 →
±90.6%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 Mississippi is projected to rise about 77% by 2029 — from 0.05 in 2024 to a central estimate of 0.09 (95% range 0.00–0.30). A 5-year backtest shows a typical error of ±90.6%, with 100% of held-out values landing inside the 95% band.19662029
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 →
20250.100.000.31
20260.100.000.31
20270.100.000.31
20280.100.000.30
20290.090.000.30

Warbling Vireo Survey Routes in Mississippi

Routes recording Warbling Vireo in Mississippi.
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 →
Dundee620191970
Lake Mary519871987
Tallahatchie219981996
Beverly119741967
Commerce119661966
Fort Adams119791979
Lake Como120102010
Water Valley120152015
Tippo119971997
Lucien119921992
Fayette119731969
Forest119981998
Corinth120242024

Warbling Vireo Population Trend in Other States

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

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