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Species · Texas · BBS 2025 Release · 1966–2024

Bronzed Cowbird Population Trend in Texas

All statesGeneralists

Bronzed Cowbird in Texas has held roughly steady: down 6% on the route-weighted index since 1969.

-6%Since 1969
93Routes In State
57Years

Notable Bronzed Cowbird Trends in Texas

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

Bronzed Cowbird Population Forecast in Texas

If the recent trend holds, Bronzed Cowbird in Texas is projected to rise about 54% by 2029 — from 1.0 in 2024 to a central estimate of 1.6 (95% range 0.01–3.2). A 5-year backtest shows a typical error of ±89.1%, with 100% of held-out values landing inside the 95% band.

+54%Change by 2029
1.6Projected 2029 index
0.01–3.295% range
±89.1%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
20251.70.063.3
20261.60.043.2
20271.60.033.2
20281.60.023.2
20291.60.013.2

Bronzed Cowbird Survey Routes in Texas

Routes recording Bronzed Cowbird in Texas.
Progreso7920111994
Loyola Beach 24620242010
Loyola Beach4020091994
L. Atascosa Nwr3220231998
Raymondville3020241969
Millett3020121995
Kingsville1520241967
Rachal1420231967
San Pedro1420231996
Sejita1320241994
Zapata1219871967
Agua Nueva1120231969
George West1120241967
San Ygnacio919851967
Heidelberg820242013
Encinal720101969
Guerra720181988
Three Rivers720241994
Lag Atascosa620241969
Comstock620171998
Shafter619851985
Pumpville620112006
Hondo520241972
Fannin520101998
Laredo520181994

Bronzed Cowbird Population Trend in Other States

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