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Species · Louisiana · BBS 2026 Release · 1966–2025

Red-eyed Vireo Population Trend in Louisiana

All statesForest birds

Red-eyed Vireo in Louisiana has surged: up 452% on the route-weighted index since 1969.

+452%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 →
86Routes 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 Red-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 →

Red-eyed Vireo has surged in Louisiana: up 452% on the route-weighted index since 1969.

Red-eyed Vireo Population Forecast in Louisiana

If the recent trend holds, Red-eyed Vireo in Louisiana is projected to fall about 17% by 2030 — from 11 in 2025 to a central estimate of 9.4 (95% range 6.3–13). A 5-year backtest shows a typical error of ±37%, with 0% of held-out values landing inside the 95% band.

-17%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 →
9.4Projected 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 →
6.3–1395% 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 →
±37%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, Red-eyed Vireo in Louisiana is projected to fall about 17% by 2030 — from 11 in 2025 to a central estimate of 9.4 (95% range 6.3–13). A 5-year backtest shows a typical error of ±37%, with 0% 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 →
20269.05.812
20279.15.912
20289.26.112
20299.36.212
20309.46.313

Red-eyed Vireo Survey Routes in Louisiana

Routes recording Red-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 →
Ivan5420131998
Mount Union5220251998
Ivan 24520252014
Atchafalaya4020251989
Natchez3020251992
Womack2520251999
Linville2520251998
Goodwill2520252004
Grayson2420212005
Derry 22320251990
Evelyn2220242004
Cheniere2120251984
Enterprise2020252006
Tensas Nwr2020251987
Flat Creek1920251998
Hargis1920112005
Marion1819961988
Burr Ferry1820251987
Plettenberg1720221973
Derry1619891968
Carterville1519921992
Clay1420251968
Longstreet1320251967
De Ridder1120191969
Chatham1119751967

Red-eyed Vireo Population Trend in Other States

alabamaalaskaarkansascoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaskentuckymainemarylandmassachusettsmichiganminnesotamississippimissourimontananebraskanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinanorth-dakotaohiooklahomaoregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatennesseetexasvermontvirginiawashingtonwest-virginiawisconsinwyoming

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