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Species · Louisiana · BBS 2026 Release · 1966–2025

White-eyed Vireo Population Trend in Louisiana

All statesForest birds

White-eyed Vireo in Louisiana has surged: up 189% on the route-weighted index since 1969.

+189%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 →
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 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 189% 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 22% by 2030 — from 26 in 2025 to a central estimate of 20 (95% range 14–27). A 5-year backtest shows a typical error of ±20.8%, with 80% of held-out values landing inside the 95% band.

-22%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 →
20Projected 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 →
14–2795% 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 →
±20.8%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 22% by 2030 — from 26 in 2025 to a central estimate of 20 (95% range 14–27). A 5-year backtest shows a typical error of ±20.8%, with 80% 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 →
2026201326
2027201326
2028201426
2029201427
2030201427

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 →
Flat Creek9220251998
Atchafalaya8520251989
Womack6320251999
Mount Union5120251998
Ivan 25020252014
Trout4820251988
Goodwill4820252004
Ivan4720131998
Grayson4720212005
Norwood4320252004
Clay4220251968
Longstreet4120251967
Evelyn4120242004
Ramah4020251988
Enterprise3720252006
Tensas Nwr3720251987
Hargis3620112005
Fort Jessup3420231998
Linville3420251998
Easton3319901967
Burr Ferry3320251987
Morgan City3119861967
Derry 23120251990
Chatham3019751967
Plettenberg2920221968

White-eyed Vireo Population Trend in Other States

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

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