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

Brown-headed Cowbird In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyGeneralists

Brown-headed Cowbird in Mississippi Alluvial Valley has increased: up 42% on the route-weighted index since 1968.

+42%Since 1968
73Routes In Region
58Years

Notable Signals

No notable trend signals for Brown-headed Cowbird in Mississippi Alluvial Valley. See the full index history below.

Forecast

If the recent trend holds, Brown-headed Cowbird in Mississippi Alluvial Valley is projected to stay roughly flat through 2029, near 23 (95% range 16–30). A 5-year backtest shows a typical error of ±6.7%, with 100% of held-out values landing inside the 95% band.

+4%Change by 2029
23Projected 2029 index
16–3095% range
±6.7%Backtest error
19662029
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
2025221529
2026231630
2027231630
2028231630
2029231630

Routes In Mississippi Alluvial Valley

Routes recording Brown-headed Cowbird in Mississippi Alluvial Valley.
RamahLOUISIANA892024
DeventerMISSOURI572024
HaytiMISSOURI572021
DundeeMISSISSIPPI542022
TallahatchieMISSISSIPPI522024
CarlisleLOUISIANA481988
South BendARKANSAS452023
SaffellARKANSAS412019
WintervilleMISSISSIPPI412011
ShawLOUISIANA352024
BlodgettMISSOURI342024
Port AllenLOUISIANA302024
WilsonARKANSAS292024
MaynardARKANSAS282024
Crowley'S RidgeARKANSAS282024
FrogmoreLOUISIANA272024
HughesARKANSAS262023
Bardwell 2KENTUCKY262024
Baton RougeLOUISIANA242024
Morgan CityLOUISIANA232022
River RoadLOUISIANA212024
AtchafalayaLOUISIANA212024
Cp GirardeauMISSOURI212024
Delta N.F.MISSISSIPPI202021
Dahomey NwrMISSISSIPPI202024

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