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

Verdin In Tamaulipan Brushlands

All regionsTamaulipan BrushlandsArid-land birds

Verdin in Tamaulipan Brushlands has collapsed: down 81% on the route-weighted index since 1969.

-81%Since 1969
25Routes In Region
56Years

Notable Signals

long arc declinecomputed index

Verdin has collapsed in Tamaulipan Brushlands: down 81% on the route-weighted index since 1969.

Forecast

If the recent trend holds, Verdin in Tamaulipan Brushlands is projected to fall about 52% by 2029 — from 4.8 in 2024 to a central estimate of 2.3 (95% range 0.00–8.9). A 5-year backtest shows a typical error of ±112.4%, with 100% of held-out values landing inside the 95% band.

-52%Change by 2029
2.3Projected 2029 index
0.00–8.995% range
±112.4%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
20252.50.009.0
20262.40.009.0
20272.40.008.9
20282.30.008.9
20292.30.008.9

Routes In Tamaulipan Brushlands

Routes recording Verdin in Tamaulipan Brushlands.
GuerraTEXAS312018
Millett 2TEXAS242024
El SauzTEXAS102015
Catarina 2TEXAS102017
Agua NuevaTEXAS92023
HondoTEXAS82024
San YgnacioTEXAS71982
Encinal 2TEXAS62024
Catarina 3TEXAS62024
George WestTEXAS52024
RaymondvilleTEXAS52024
MillettTEXAS42012
ZapataTEXAS31979
LaredoTEXAS32021
KingsvilleTEXAS22002
EncinalTEXAS22010
CatarinaTEXAS22010
El IndioTEXAS22007
SejitaTEXAS22024
Cavasara Cr.TEXAS22013
RachalTEXAS12023
RandadoTEXAS12018
Mirando CityTEXAS12018
La PryorTEXAS12005
DilleyTEXAS12024

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