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Species · Minnesota · BBS 2025 Release · 1966–2024

Marsh Wren Population Trend in Minnesota

All statesForest birds

Marsh Wren in Minnesota has surged: up 204% on the route-weighted index since 1969.

+204%Since 1969
66Routes In State
57Years

Notable Marsh Wren Trends in Minnesota

long arc increasecomputed index

Marsh Wren has surged in Minnesota: up 204% on the route-weighted index since 1969.

Marsh Wren Population Forecast in Minnesota

If the recent trend holds, Marsh Wren in Minnesota is projected to rise about 26% by 2029 — from 1.6 in 2024 to a central estimate of 2.1 (95% range 1.1–3.0). A 5-year backtest shows a typical error of ±16.7%, with 100% of held-out values landing inside the 95% band.

+26%Change by 2029
2.1Projected 2029 index
1.1–3.095% range
±16.7%Backtest error
19672029
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
20252.01.02.9
20262.01.02.9
20272.01.13.0
20282.01.13.0
20292.11.13.0

Marsh Wren Survey Routes in Minnesota

Routes recording Marsh Wren in Minnesota.
Sherburne Nr2520241990
Big Stone2020121995
Little Fork1219901990
Cohasset1119901990
Tracy1120242005
Chokio1020241969
Ashby920211997
Maynard720151986
Chokio North620242011
Osseo520041967
Knapp520241967
Backus520241970
Lake Bronson520111998
Fairmont520232003
Franklin520242005
New London520241994
Minnetonka420221969
Appleton420241980
Worthington420242005
Beltrami320061976
Glenwood320181993
Chandler220232022
Lakeville219991976
Evergreen220181967
Glyndon220241980

Marsh Wren Population Trend in Other States

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

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