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

Pacific Wren Population Trend in Idaho

All statesForest birds

Pacific Wren in Idaho has surged: up 583% on the route-weighted index since 1976.

+583%Since 1976
18Routes In State
50Years

Notable Pacific Wren Trends in Idaho

long arc increasecomputed index

Pacific Wren has surged in Idaho: up 583% on the route-weighted index since 1976.

Pacific Wren Population Forecast in Idaho

If the recent trend holds, Pacific Wren in Idaho is projected to stay roughly flat through 2029, near 2.3 (95% range 0.83–3.7). A 5-year backtest shows a typical error of ±1560%, with 40% of held-out values landing inside the 95% band.

n/aChange by 2029
2.3Projected 2029 index
0.83–3.795% range
±1560%Backtest error
19722029
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
20252.20.703.6
20262.20.733.6
20272.20.763.7
20282.20.803.7
20292.30.833.7

Pacific Wren Survey Routes in Idaho

Routes recording Pacific Wren in Idaho.
Lolo Pass1520191994
Pierce1120071992
Nezperce1020121989
Mivoden820231977
Avery820231979
Golden820151987
Marble Creek620231988
N Fork Cda R620191993
Salmon River620211989
Nezperce Nf419991996
Baldy Mountain420152013
Rochat Divde220231993
Challis220192019
Naples120221972
Grangeville120241986
Deep Creek119851985
Burgdorf119981990
Coolin120221986

Pacific Wren Population Trend in Other States

alaskacaliforniamontananevadaoregonsouth-dakotawashington

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