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Species · Louisiana · BBS 2026 Release · 1966–2025

Yellow-throated Vireo Population Trend in Louisiana

All statesForest birds

Yellow-throated Vireo in Louisiana has surged: up 389% on the route-weighted index since 1969.

+389%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 →
71Routes 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 Yellow-throated Vireo Trends in LouisianaNotable signalsLong-arc shifts the engine flags automatically — sustained declines or increases large enough to stand out from year-to-year noise.Full methodology →

long arc increasecomputed indexTrend sourceWhether the figure is our own computed route-weighted index or an official USGS modeled estimate. The current build labels every trend as computed.Full methodology →

Yellow-throated Vireo has surged in Louisiana: up 389% on the route-weighted index since 1969.

Yellow-throated Vireo Population Forecast in Louisiana

If the recent trend holds, Yellow-throated Vireo in Louisiana is projected to fall about 45% by 2030 — from 3.5 in 2025 to a central estimate of 1.9 (95% range 0.71–3.2). A 5-year backtest shows a typical error of ±50.2%, with 20% of held-out values landing inside the 95% band.

-45%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 →
1.9Projected 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 →
0.71–3.295% 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 →
±50.2%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, Yellow-throated Vireo in Louisiana is projected to fall about 45% by 2030 — from 3.5 in 2025 to a central estimate of 1.9 (95% range 0.71–3.2). A 5-year backtest shows a typical error of ±50.2%, with 20% 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 →
20261.90.643.1
20271.90.663.1
20281.90.683.2
20291.90.693.2
20301.90.713.2

Yellow-throated Vireo Survey Routes in Louisiana

Routes recording Yellow-throated Vireo in Louisiana.
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 →
Tensas Nwr1620251987
Womack1320251999
Flat Creek1220251998
Ivan 21120252014
Ramah920251988
Atchafalaya920251989
Lacombe819831967
Carterville819921992
Mount Union820251998
Cheniere820251984
Longstreet720251967
Easton619901973
Grayson620212006
Linville620251998
Pearl River620251989
Plettenberg520221973
Derry519891970
Evelyn520242004
Slidell519881984
Freetown420001967
Bickham420241986
Fort Jessup420231999
Fishville420161967
Many419921989
Gibson420152014

Yellow-throated Vireo Population Trend in Other States

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

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