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Species · Alaska · BBS 2025 Release · 1966–2024

Wilson's Warbler Population Trend in Alaska

All statesForest birds

Wilson's Warbler in Alaska has held roughly steady: up 4% on the route-weighted index since 1972.

+4%Since 1972
129Routes In State
49Years

Notable Wilson's Warbler Trends in Alaska

No notable trend signals for Wilson's Warbler in Alaska. See the full index history below.

Wilson's Warbler Population Forecast in Alaska

If the recent trend holds, Wilson's Warbler in Alaska is projected to rise about 36% by 2029 — from 13 in 2024 to a central estimate of 18 (95% range 9.6–26). A 5-year backtest shows a typical error of ±37.7%, with 100% of held-out values landing inside the 95% band.

+36%Change by 2029
18Projected 2029 index
9.6–2695% range
±37.7%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
2025189.226
2026189.326
2027189.426
2028189.526
2029189.626

Wilson's Warbler Survey Routes in Alaska

Routes recording Wilson's Warbler in Alaska.
Copper River13620111993
Kodiak9119841983
Dillingham7820191993
Toklat7320241982
Thompson Pas6720241983
Yakutat (Short)6119841984
Haines5620241972
Savage5420241986
Cordova4920241983
Kodiak 24920241985
Chiniak4820241985
Gweek River4720021994
Sheep Mtn4420171983
King Salmon4420241993
Maclaren4220241982
Homer4219821978
Katmai N.P.4120221993
Chichagof Is4120241994
Dillingham (Short)4019841984
Togiak River3820051994
Paxson Lake3719971991
Yakutat3020241993
Sitka2920241993
Circle2620241986
Harlequin L.2520241993

Wilson's Warbler Population Trend in Other States

californiacoloradoidahomainemichiganminnesotamontananevadanew-hampshirenew-mexiconew-yorkoregonutahvermontwashingtonwisconsinwyoming

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