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Species · Louisiana · BBS 2025 Release · 1966–2024

Marsh Wren Population Trend in Louisiana

All statesForest birds

Marsh Wren in Louisiana has edged down: down 15% on the route-weighted index since 1978.

-15%Since 1978
12Routes In State
41Years

Notable Marsh Wren Trends in Louisiana

No notable trend signals for Marsh Wren in Louisiana. See the full index history below.

Marsh Wren Population Forecast in Louisiana

If the recent trend holds, Marsh Wren in Louisiana is projected to stay roughly flat through 2028, near 0.51 (95% range 0.00–1.4). A 5-year backtest shows a typical error of ±671.5%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2028
0.51Projected 2028 index
0.00–1.495% range
±671.5%Backtest error
19712028
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
20240.520.001.4
20250.510.001.4
20260.510.001.4
20270.510.001.4
20280.510.001.4

Marsh Wren Survey Routes in Louisiana

Routes recording Marsh Wren in Louisiana.
Sabine Nwr 21620172009
Sabine Nwr1120081989
Forked Island1020192008
Ltl Chenier 2820112010
Gran Chenier619711971
Forked Island 2320112011
Freetown119781978
Morgan City119751975
Creole119711971
Ltl Chenier120231986
Hackberry120061978
Glencoe120111999

Marsh Wren Population Trend in Other States

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

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