BirdAnalyst
Species · BCR 37 · BBS 2025 Release · 1966–2024

Red-eyed Vireo In Gulf Coastal Prairie

All regionsGulf Coastal PrairieForest birds

Red-eyed Vireo in Gulf Coastal Prairie has fallen sharply: down 64% on the route-weighted index since 1969.

-64%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 →
20Routes 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 →
40YearsYears 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 Gulf Coastal Prairie: down 64% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Red-eyed Vireo in Gulf Coastal Prairie is projected to fall about 37% by 2029 — from 0.10 in 2024 to a central estimate of 0.06 (95% range 0.00–0.40). A 5-year backtest shows a typical error of ±84.2%, with 80% of held-out values landing inside the 95% band.

-37%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 →
0.06Projected 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 →
0.00–0.4095% 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 →
±84.2%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 Gulf Coastal Prairie is projected to fall about 37% by 2029 — from 0.10 in 2024 to a central estimate of 0.06 (95% range 0.00–0.40). A 5-year backtest shows a typical error of ±84.2%, with 80% 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 →
20250.080.000.42
20260.080.000.42
20270.070.000.41
20280.070.000.40
20290.060.000.40

Routes In Gulf Coastal Prairie

Routes recording Red-eyed Vireo in Gulf Coastal Prairie.
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 →
Vinton 2LOUISIANA82023
VintonLOUISIANA62009
LafitteLOUISIANA51990
Hackberry 2LOUISIANA22024
JuniorLOUISIANA11987
Gran ChenierLOUISIANA11973
HackberryLOUISIANA12008
GlencoeLOUISIANA12010
EstherLOUISIANA12022
MauriceLOUISIANA12019
KaplanLOUISIANA12008
RichardLOUISIANA11998
Lag AtascosaTEXAS11997
Hinkles FerTEXAS12023
VanderbiltTEXAS11971
WinnieTEXAS11990
StowellTEXAS11993
DanburyTEXAS11992
Port AcresTEXAS12017
Moon LakeTEXAS12010

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