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Species · Wisconsin · BBS 2025 Release · 1966–2024

Hermit Thrush Population Trend in Wisconsin

All statesForest birds

Hermit Thrush in Wisconsin has surged: up 105% on the route-weighted index since 1968.

+105%Since 1968
49Routes In State
58Years

Notable Hermit Thrush Trends in Wisconsin

long arc increasecomputed index

Hermit Thrush has surged in Wisconsin: up 105% on the route-weighted index since 1968.

Hermit Thrush Population Forecast in Wisconsin

If the recent trend holds, Hermit Thrush in Wisconsin is projected to rise about 82% by 2029 — from 2.5 in 2024 to a central estimate of 4.5 (95% range 2.7–6.4). A 5-year backtest shows a typical error of ±116.3%, with 20% of held-out values landing inside the 95% band.

+82%Change by 2029
4.5Projected 2029 index
2.7–6.495% range
±116.3%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
20254.32.56.2
20264.42.56.2
20274.42.66.3
20284.52.66.3
20294.52.76.4

Hermit Thrush Survey Routes in Wisconsin

Routes recording Hermit Thrush in Wisconsin.
Land O Lakes4020161967
Land O' Lakes 22320242017
Conover2220241998
Eagle River2120241966
Popple River1920241966
Cavour1420241998
Mellen1120241998
Shanagolden1020241966
Union Twp1020241975
Grand View920241966
Montreal920241968
Hatfield919981977
Irma620241968
Hollister620241967
Amberg620241980
Chaffey520241966
Rib Lake520241970
Mcnaughton520241966
Flambeau520241998
Gilman420161981
Mather420191986
Merrill320081966
Crandon320241967
Washington I320191994
Rhinelander320231998

Hermit Thrush Population Trend in Other States

alaskaarizonacaliforniacoloradoconnecticutidahomainemarylandmassachusettsmichiganminnesotamontananevadanew-hampshirenew-jerseynew-mexiconew-yorknorth-carolinaohiooregonpennsylvaniarhode-islandsouth-dakotatennesseetexasutahvermontvirginiawashingtonwest-virginiawyoming

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