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Species · Louisiana · BBS 2025 Release · 1966–2024

White-eyed Vireo Population Trend in Louisiana

All statesForest birds

White-eyed Vireo in Louisiana has surged: up 171% on the route-weighted index since 1969.

+171%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 →
96Routes 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 White-eyed 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 →

White-eyed Vireo has surged in Louisiana: up 171% on the route-weighted index since 1969.

White-eyed Vireo Population Forecast in Louisiana

If the recent trend holds, White-eyed Vireo in Louisiana is projected to fall about 13% by 2029 — from 23 in 2024 to a central estimate of 20 (95% range 13–26). A 5-year backtest shows a typical error of ±14.9%, with 100% of held-out values landing inside the 95% band.

-13%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 →
20Projected 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 →
13–2695% 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 →
±14.9%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, White-eyed Vireo in Louisiana is projected to fall about 13% by 2029 — from 23 in 2024 to a central estimate of 20 (95% range 13–26). A 5-year backtest shows a typical error of ±14.9%, with 100% 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 →
2025191325
2026191326
2027191326
2028191326
2029201326

White-eyed Vireo Survey Routes in Louisiana

Routes recording White-eyed 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 →
Atchafalaya7520241989
Flat Creek6220241998
Womack5820241999
Goodwill5420242004
Clay5220241968
Ivan4720131998
Ivan 24720162014
Grayson4720212005
Tensas Nwr4720241987
Trout4420241988
Mount Union4420241998
Evelyn4120242004
Longstreet3720241967
Burr Ferry3620241987
Hargis3620112005
Fort Jessup3420231998
Easton3319901967
Norwood3220242004
Morgan City3119861967
Enterprise3120242006
Chatham3019751967
Plettenberg2920221968
Many2919921989
Derry 22920241990
Franklinton2920242008

White-eyed Vireo Population Trend in Other States

alabamaarkansasconnecticutdelawarefloridageorgiaillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganmississippimissourinebraskanew-jerseynew-yorknorth-carolinaohiooklahomapennsylvaniarhode-islandsouth-carolinatennesseetexasvirginiawest-virginiawisconsin

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