BirdAnalyst
Species · BCR 21 · BBS 2025 Release · 1966–2024

Bronzed Cowbird In Oaks and Prairies

All regionsOaks and PrairiesGeneralists

Bronzed Cowbird in Oaks and Prairies has surged: up 177% on the route-weighted index since 1971.

+177%Since 1971
10Routes In Region
46Years

Notable Signals

long arc increasecomputed index

Bronzed Cowbird has surged in Oaks and Prairies: up 177% on the route-weighted index since 1971.

Forecast

If the recent trend holds, Bronzed Cowbird in Oaks and Prairies is projected to rise about 44% by 2029 — from 0.21 in 2024 to a central estimate of 0.31 (95% range 0.00–0.99). A 5-year backtest shows a typical error of ±503%, with 100% of held-out values landing inside the 95% band.

+44%Change by 2029
0.31Projected 2029 index
0.00–0.9995% range
±503%Backtest error
19682029
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
20250.310.000.99
20260.310.000.99
20270.310.000.99
20280.310.000.99
20290.310.000.99

Routes In Oaks and Prairies

Routes recording Bronzed Cowbird in Oaks and Prairies.
Three RiversTEXAS72024
FanninTEXAS52010
SchroederTEXAS31994
CampbelltonTEXAS22024
Lone OakTEXAS22008
YoakumTEXAS21996
BriteTEXAS22023
HobsonTEXAS12024
MuldoonTEXAS11978
LockhartTEXAS11996

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