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Species · Louisiana · BBS 2025 Release · 1966–2024

Red-eyed Vireo Population Trend in Louisiana

All statesForest birds

Red-eyed Vireo in Louisiana has surged: up 469% on the route-weighted index since 1969.

+469%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 →
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 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 469% 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 27% by 2029 — from 12 in 2024 to a central estimate of 9.1 (95% range 6.0–12). A 5-year backtest shows a typical error of ±30.4%, with 20% of held-out values landing inside the 95% band.

-27%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 →
9.1Projected 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 →
6.0–1295% 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 →
±30.4%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 27% by 2029 — from 12 in 2024 to a central estimate of 9.1 (95% range 6.0–12). A 5-year backtest shows a typical error of ±30.4%, with 20% 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 →
20258.75.612
20268.85.712
20278.95.812
20289.05.912
20299.16.012

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 →
Ivan 26220162014
Mount Union6120241998
Goodwill5720242004
Ivan5420131998
Clay4220241968
Womack3520241999
Atchafalaya2920241989
Linville2820241998
Flat Creek2620241998
Natchez2520241992
Grayson2420212005
Cheniere2320241984
Enterprise2320242006
Evelyn2220242004
Burr Ferry2020241987
Hargis1920112005
Marion1819961988
Norwood1820242004
Plettenberg1720221973
Tensas Nwr1720241987
Derry1619891968
Longstreet1520241967
Carterville1519921992
Derry 21520241990
De Ridder1120191969

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 2026-05-22.