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Species · Kentucky · BBS 2025 Release · 1966–2024

Red-eyed Vireo Population Trend in Kentucky

All statesForest birds

Red-eyed Vireo in Kentucky has risen sharply: up 64% on the route-weighted index since 1968.

+64%Since 1968TrendPercent 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 →
64Routes 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 KentuckyNotable 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 risen sharply in Kentucky: up 64% on the route-weighted index since 1968.

Red-eyed Vireo Population Forecast in Kentucky

If the recent trend holds, Red-eyed Vireo in Kentucky is projected to rise about 49% by 2029 — from 10 in 2024 to a central estimate of 15 (95% range 6.4–24). A 5-year backtest shows a typical error of ±39.3%, with 100% of held-out values landing inside the 95% band.

+49%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 →
15Projected 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 →
6.4–2495% 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 →
±39.3%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 →
19662029
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 →
2025155.823
2026155.924
2027156.124
2028156.324
2029156.424

Red-eyed Vireo Survey Routes in Kentucky

Routes recording Red-eyed Vireo in Kentucky.
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 →
Staffordsvil7819971996
Beattyville 27220242006
Cumberlnd Gp7120181966
Phelps7119971979
Pippa Passes6519971988
Brownsville4720242022
Monticello3620221968
Paintsville3619951979
Kehoe3519921966
Kehoe 22820242005
Mammoth Cave2620141995
Beattyville2120011966
Mammoth Cave North1920132009
Carter1920241976
Levee 21920192007
Campton1820211979
Hegira1620241988
Pine Ridge1619781966
Apex1420242005
Merrimac1220241967
Johnsonville1220211966
Levee1119821966
Joy1120231967
Porter1120241966
Sunnybrook1020221968

Red-eyed Vireo Population Trend in Other States

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

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