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

Bewick's Wren Population Trend in Washington

All statesForest birds

Bewick's Wren in Washington has increased: up 35% on the route-weighted index since 1970.

+35%Since 1970
61Routes In State
56Years

Notable Bewick's Wren Trends in Washington

No notable trend signals for Bewick's Wren in Washington. See the full index history below.

Bewick's Wren Population Forecast in Washington

If the recent trend holds, Bewick's Wren in Washington is projected to fall about 52% by 2029 — from 1.7 in 2024 to a central estimate of 0.81 (95% range 0.06–1.6). A 5-year backtest shows a typical error of ±36%, with 80% of held-out values landing inside the 95% band.

-52%Change by 2029
0.81Projected 2029 index
0.06–1.695% range
±36%Backtest error
19682029
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
20250.830.081.6
20260.820.071.6
20270.820.071.6
20280.810.061.6
20290.810.061.6

Bewick's Wren Survey Routes in Washington

Routes recording Bewick's Wren in Washington.
Mukilteo2220241993
Mendota 31520242005
Mcchord1220151996
Everett1220241975
Vashon Is.1020241995
Mendota 2920001989
South Elma720241975
Warm Beach520171968
Yakima520241994
Issaquah419871969
Wapato420221976
Raymond420211993
Bay View420161994
Rainier420181993
Warm Beach 2420242018
Ewan 2320242023
Ilwaco320241975
Prescott320041987
Carnation320241988
Newhalem219721969
Kamilche220241968
Bunker Hill220221968
Cougar219931970
Snowden220181997
Raymond 2220242022

Bewick's Wren Population Trend in Other States

alabamaarizonaarkansascaliforniacoloradoidahoillinoisindianaiowakansaskentuckymarylandmississippimissourinevadanew-mexiconorth-carolinaohiooklahomaoregonpennsylvaniatennesseetexasutahvirginiawest-virginiawisconsinwyoming

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