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

Winter Wren Population Trend in Wisconsin

All statesForest birds

Winter Wren in Wisconsin has surged: up 99% on the route-weighted index since 1968.

+99%Since 1968
49Routes In State
58Years

Notable Winter Wren Trends in Wisconsin

long arc increasecomputed index

Winter Wren has surged in Wisconsin: up 99% on the route-weighted index since 1968.

Winter Wren Population Forecast in Wisconsin

If the recent trend holds, Winter Wren in Wisconsin is projected to rise about 60% by 2029 — from 0.59 in 2024 to a central estimate of 0.95 (95% range 0.31–1.6). A 5-year backtest shows a typical error of ±93%, with 80% of held-out values landing inside the 95% band.

+60%Change by 2029
0.95Projected 2029 index
0.31–1.695% range
±93%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
20250.930.281.6
20260.940.291.6
20270.940.301.6
20280.950.301.6
20290.950.311.6

Winter Wren Survey Routes in Wisconsin

Routes recording Winter Wren in Wisconsin.
Land O Lakes1420161967
Washington I920241967
Eagle River720241966
Shanagolden520241969
Mellen520241998
Cavour520241998
Hollister420231968
Land O' Lakes 2420242017
Popple River320241966
Esdaile319751975
Chaffey220211969
Grand View220241966
Bayfield220241970
Amberg220231980
Wis Rapids220222022
Amnicon Falls220231998
Casco220231976
Flambeau220241998
Iron River120221967
Minong119961969
Montreal120241979
Union Twp120172017
Loraine119791979
Cumberland119981997
Weyerhauser119951995

Winter Wren Population Trend in Other States

connecticutmainemarylandmassachusettsmichiganminnesotanew-hampshirenew-jerseynew-yorknorth-carolinaohiopennsylvaniatennesseevermontvirginiawest-virginia

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