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

Bronzed Cowbird In Tamaulipan Brushlands

All regionsTamaulipan BrushlandsGeneralists

Bronzed Cowbird in Tamaulipan Brushlands has edged down: down 20% on the route-weighted index since 1969.

-20%Since 1969
27Routes In Region
57Years

Notable Signals

No notable trend signals for Bronzed Cowbird in Tamaulipan Brushlands. See the full index history below.

Forecast

If the recent trend holds, Bronzed Cowbird in Tamaulipan Brushlands is projected to rise about 17% by 2029 — from 7.5 in 2024 to a central estimate of 8.7 (95% range 0.00–22). A 5-year backtest shows a typical error of ±65.8%, with 100% of held-out values landing inside the 95% band.

+17%Change by 2029
8.7Projected 2029 index
0.00–2295% range
±65.8%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
20259.30.0022
20269.20.0022
20279.00.0022
20288.90.0022
20298.70.0022

Routes In Tamaulipan Brushlands

Routes recording Bronzed Cowbird in Tamaulipan Brushlands.
ProgresoTEXAS792011
RaymondvilleTEXAS302024
MillettTEXAS302012
KingsvilleTEXAS152024
RachalTEXAS142023
SejitaTEXAS132024
ZapataTEXAS121987
Agua NuevaTEXAS112023
George WestTEXAS112024
San YgnacioTEXAS91985
HeidelbergTEXAS82024
EncinalTEXAS72010
GuerraTEXAS72018
HondoTEXAS52024
LaredoTEXAS52018
Millett 2TEXAS52024
Encinal 2TEXAS32023
La PryorTEXAS22017
El SauzTEXAS22023
Catarina 2TEXAS22017
Cavasara Cr.TEXAS22007
RandadoTEXAS12024
Mirando CityTEXAS12024
CatarinaTEXAS12010
El IndioTEXAS11996

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