BirdAnalyst
Species · BCR 31 · BBS 2025 Release · 1966–2024

Red-eyed Vireo In Peninsular Florida

All regionsPeninsular FloridaForest birds

Red-eyed Vireo in Peninsular Florida has fallen sharply: down 58% on the route-weighted index since 1968.

-58%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 →
40Routes In RegionSurvey 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 SignalsNotable 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 declinecomputed 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 fallen sharply in Peninsular Florida: down 58% on the route-weighted index since 1968.

Forecast

If the recent trend holds, Red-eyed Vireo in Peninsular Florida is projected to fall about 42% by 2029 — from 0.92 in 2024 to a central estimate of 0.53 (95% range 0.00–1.2). A 5-year backtest shows a typical error of ±18%, with 100% of held-out values landing inside the 95% band.

-42%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 →
0.53Projected 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 →
0.00–1.295% 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 →
±18%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 Peninsular Florida is projected to fall about 42% by 2029 — from 0.92 in 2024 to a central estimate of 0.53 (95% range 0.00–1.2). A 5-year backtest shows a typical error of ±18%, with 100% of held-out values landing inside the 95% band.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 →
20250.590.001.2
20260.580.001.2
20270.560.001.2
20280.550.001.2
20290.530.001.2

Routes In Peninsular Florida

Routes recording Red-eyed Vireo in Peninsular Florida.
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 →
Island GroveFLORIDA62024
CroomFLORIDA62024
MicanopyFLORIDA51991
Mt. OliveFLORIDA52024
KenansvilleFLORIDA42024
Green SwampFLORIDA32021
St AugustineFLORIDA22024
BelmoreFLORIDA22024
ChildsFLORIDA22013
Ft MccoyFLORIDA22024
NobletonFLORIDA22024
CrewsvilleFLORIDA22018
OcalaFLORIDA22019
Wildernes PkFLORIDA22014
RomeoFLORIDA12017
San AntonioFLORIDA12024
Polk CityFLORIDA12022
MabelFLORIDA12007
ScottsmoorFLORIDA12021
Ft LonesomeFLORIDA12006
PinecrestFLORIDA12024
IndiantownFLORIDA12003
Plantation KFLORIDA11985
DeanvilleFLORIDA12016
FlemingtonFLORIDA11999

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