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

Bell's Vireo In Tamaulipan Brushlands

All regionsTamaulipan BrushlandsForest birds

Bell's Vireo in Tamaulipan Brushlands has collapsed: down 76% on the route-weighted index since 1969.

-76%Since 1969
23Routes In Region
57Years

Notable Signals

long arc declinecomputed index

Bell's Vireo has collapsed in Tamaulipan Brushlands: down 76% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Bell's Vireo in Tamaulipan Brushlands is projected to fall about 82% by 2029 — from 1.8 in 2024 to a central estimate of 0.31 (95% range 0.00–3.4). A 5-year backtest shows a typical error of ±153.7%, with 100% of held-out values landing inside the 95% band.

-82%Change by 2029
0.31Projected 2029 index
0.00–3.495% range
±153.7%Backtest error
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 index95% low95% high
20250.460.003.5
20260.420.003.5
20270.380.003.4
20280.350.003.4
20290.310.003.4

Routes In Tamaulipan Brushlands

Routes recording Bell's Vireo in Tamaulipan Brushlands.
La PryorTEXAS142009
Millett 2TEXAS112024
El IndioTEXAS102007
CatarinaTEXAS72010
DilleyTEXAS62024
EncinalTEXAS52010
LaredoTEXAS52016
HondoTEXAS32024
Cavasara Cr.TEXAS32013
RachalTEXAS21996
Catarina 2TEXAS22013
SejitaTEXAS22021
Agua NuevaTEXAS11981
ZapataTEXAS11971
RandadoTEXAS12023
Mirando CityTEXAS12014
San YgnacioTEXAS11979
George WestTEXAS12024
GuerraTEXAS12012
Encinal 2TEXAS12018
Catarina 3TEXAS12023
MillettTEXAS12012
Pedro CreekTEXAS12010

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