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

Brown Thrasher In Mississippi Alluvial Valley

All regionsMississippi Alluvial ValleyGeneralists

Brown Thrasher in Mississippi Alluvial Valley has declined: down 42% on the route-weighted index since 1968.

-42%Since 1968
70Routes In Region
58Years

Notable Signals

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

Forecast

If the recent trend holds, Brown Thrasher in Mississippi Alluvial Valley is projected to rise about 12% by 2029 — from 2.2 in 2024 to a central estimate of 2.4 (95% range 1.2–3.7). A 5-year backtest shows a typical error of ±25.6%, with 100% of held-out values landing inside the 95% band.

+12%Change by 2029
2.4Projected 2029 index
1.2–3.795% range
±25.6%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
20252.51.23.7
20262.41.23.7
20272.41.23.7
20282.41.23.7
20292.41.23.7

Routes In Mississippi Alluvial Valley

Routes recording Brown Thrasher in Mississippi Alluvial Valley.
Baton RougeLOUISIANA112024
HarrisburgARKANSAS92009
Rayville 2LOUISIANA92024
DelhiLOUISIANA82021
SaffellARKANSAS72019
RoselandLOUISIANA62024
GibsonLOUISIANA62019
BrousvilleLOUISIANA62024
FrogmoreLOUISIANA62024
River RoadLOUISIANA62024
IsolaMISSISSIPPI62022
MoonMISSISSIPPI62018
KeystoneLOUISIANA52013
MayflowerLOUISIANA52024
RayvilleLOUISIANA52008
FloydLOUISIANA52021
GonzalesLOUISIANA52019
TransylvaniaLOUISIANA52022
ConcordLOUISIANA52019
WintervilleMISSISSIPPI52011
BardwellKENTUCKY42003
KraemerLOUISIANA42023
Cp GirardeauMISSOURI42024
AugustaARKANSAS32001
UlmARKANSAS32019

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