BirdAnalyst
Species · BCR 26 · BBS 2025 Release · 1966–2024

Bronzed Cowbird In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyGeneralists

Bronzed Cowbird in Mississippi Alluvial Valley has fallen sharply: down 51% on the route-weighted index since 2001.

-51%Since 2001
8Routes In Region
22Years

Notable Signals

long arc declinecomputed index

Bronzed Cowbird has fallen sharply in Mississippi Alluvial Valley: down 51% on the route-weighted index since 2001.

Forecast

If the recent trend holds, Bronzed Cowbird in Mississippi Alluvial Valley is projected to stay roughly flat through 2029, near 0.02 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±39.7%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.02Projected 2029 index
0.00–0.1095% range
±39.7%Backtest error
19882029
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
20250.030.000.11
20260.030.000.11
20270.030.000.10
20280.030.000.10
20290.020.000.10

Routes In Mississippi Alluvial Valley

Routes recording Bronzed Cowbird in Mississippi Alluvial Valley.
GibsonLOUISIANA42001
CarlisleLOUISIANA31988
BerwickLOUISIANA22002
RamahLOUISIANA12023
BrousvilleLOUISIANA12023
BelairLOUISIANA12012
KraemerLOUISIANA12024
Baton RougeLOUISIANA12013

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