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

Black Vulture In Tamaulipan Brushlands

All regionsTamaulipan BrushlandsGeneralists

Black Vulture in Tamaulipan Brushlands has surged: up 587% on the route-weighted index since 1970.

+587%Since 1970
27Routes In Region
56Years

Notable Signals

long arc increasecomputed index

Black Vulture has surged in Tamaulipan Brushlands: up 586% on the route-weighted index since 1970.

Forecast

If the recent trend holds, Black Vulture in Tamaulipan Brushlands is projected to fall about 50% by 2029 — from 13 in 2024 to a central estimate of 6.5 (95% range 2.1–11). A 5-year backtest shows a typical error of ±41.4%, with 60% of held-out values landing inside the 95% band.

-50%Change by 2029
6.5Projected 2029 index
2.1–1195% range
±41.4%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
20256.01.610
20266.11.811
20276.31.911
20286.42.011
20296.52.111

Routes In Tamaulipan Brushlands

Routes recording Black Vulture in Tamaulipan Brushlands.
EncinalTEXAS702009
Millett 2TEXAS522024
Encinal 2TEXAS252024
DilleyTEXAS242024
George WestTEXAS172024
Mirando CityTEXAS152022
Catarina 3TEXAS112024
KingsvilleTEXAS102024
La PryorTEXAS82017
ZapataTEXAS71979
El IndioTEXAS72001
RaymondvilleTEXAS72024
CatarinaTEXAS62009
HondoTEXAS62024
Catarina 2TEXAS62017
RandadoTEXAS52023
RachalTEXAS42023
SejitaTEXAS42024
Pedro CreekTEXAS32005
Agua NuevaTEXAS22023
San YgnacioTEXAS21985
GuerraTEXAS22023
LaredoTEXAS22021
MillettTEXAS22009
Cavasara Cr.TEXAS22023

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