BirdAnalyst
Species · BCR 36 · BBS 2025 Release · 1966–2024

White-eyed Vireo In Tamaulipan Brushlands

All regionsTamaulipan BrushlandsForest birds

White-eyed Vireo in Tamaulipan Brushlands has surged: up 280% on the route-weighted index since 1969.

+280%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 →
26Routes 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 →
54YearsYears 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 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 →

White-eyed Vireo has surged in Tamaulipan Brushlands: up 280% on the route-weighted index since 1969.

Forecast

If the recent trend holds, White-eyed Vireo in Tamaulipan Brushlands is projected to rise about 16% by 2029 — from 2.4 in 2024 to a central estimate of 2.8 (95% range 1.1–4.5). A 5-year backtest shows a typical error of ±47.8%, with 100% of held-out values landing inside the 95% band.

+16%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 →
2.8Projected 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 →
1.1–4.595% 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 →
±47.8%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, White-eyed Vireo in Tamaulipan Brushlands is projected to rise about 16% by 2029 — from 2.4 in 2024 to a central estimate of 2.8 (95% range 1.1–4.5). A 5-year backtest shows a typical error of ±47.8%, with 100% 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 →
20252.60.934.3
20262.70.974.4
20272.71.04.4
20282.81.14.5
20292.81.14.5

Routes In Tamaulipan Brushlands

Routes recording White-eyed Vireo in Tamaulipan Brushlands.
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 →
Agua NuevaTEXAS92023
Mirando CityTEXAS82024
GuerraTEXAS72018
SejitaTEXAS52024
RachalTEXAS32019
George WestTEXAS32024
HondoTEXAS32024
Catarina 3TEXAS32024
MillettTEXAS32010
Millett 2TEXAS32024
Cavasara Cr.TEXAS32013
KingsvilleTEXAS22024
EncinalTEXAS22010
Catarina 2TEXAS22017
LaredoTEXAS22023
ZapataTEXAS11979
RandadoTEXAS12024
San YgnacioTEXAS11982
CatarinaTEXAS12010
La PryorTEXAS12010
El IndioTEXAS11999
RaymondvilleTEXAS12023
El SauzTEXAS12023
Encinal 2TEXAS12024
ProgresoTEXAS12002

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