BirdAnalyst
Species · Alabama · BBS 2025 Release · 1966–2024

Marsh Wren Population Trend in Alabama

All statesForest birds

Marsh Wren in Alabama has collapsed: down 79% on the route-weighted index since 1968.

-79%Since 1968
3Routes In State
25Years

Notable Marsh Wren Trends in Alabama

long arc declinecomputed index

Marsh Wren has collapsed in Alabama: down 79% on the route-weighted index since 1968.

Marsh Wren Population Forecast in Alabama

If the recent trend holds, Marsh Wren in Alabama is projected to stay roughly flat through 2008, near 0.01 (95% range 0.00–0.10). A 5-year backtest shows a typical error of ±365.4%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2008
0.01Projected 2008 index
0.00–0.1095% range
±365.4%Backtest error
19662008
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
20040.020.000.11
20050.010.000.11
20060.010.000.10
20070.010.000.10
20080.010.000.10

Marsh Wren Survey Routes in Alabama

Routes recording Marsh Wren in Alabama.
Dauphin Is319891966
Alabama Pt219731973
Dauphin Is 2120031991

Marsh Wren Population Trend in Other States

arizonacaliforniacoloradoconnecticutdelawarefloridageorgiaidahoillinoisindianaiowakansaslouisianamainemarylandmassachusettsmichiganminnesotamissourimontananebraskanevadanew-hampshirenew-jerseynew-yorknorth-carolinanorth-dakotaohiooregonpennsylvaniarhode-islandsouth-carolinasouth-dakotatexasutahvermontvirginiawashingtonwisconsinwyoming

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