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Species · Alaska · BBS 2025 Release · 1966–2024

Orange-crowned Warbler Population Trend in Alaska

All statesForest birds

Orange-crowned Warbler in Alaska has surged: up 331% on the route-weighted index since 1973.

+331%Since 1973
123Routes In State
48Years

Notable Orange-crowned Warbler Trends in Alaska

long arc increasecomputed index

Orange-crowned Warbler has surged in Alaska: up 331% on the route-weighted index since 1973.

Orange-crowned Warbler Population Forecast in Alaska

If the recent trend holds, Orange-crowned Warbler in Alaska is projected to rise about 43% by 2029 — from 19 in 2024 to a central estimate of 27 (95% range 19–36). A 5-year backtest shows a typical error of ±48.2%, with 20% of held-out values landing inside the 95% band.

+43%Change by 2029
27Projected 2029 index
19–3695% range
±48.2%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
2025261735
2026261835
2027271835
2028271836
2029271936

Orange-crowned Warbler Survey Routes in Alaska

Routes recording Orange-crowned Warbler in Alaska.
Katmai N.P.9620221993
Copper River9320111993
Dillingham8920191995
Haines7120241972
Kuiu Island6320102004
Yakutat6020241993
Cordova5720241983
Kanuti Canyn5720241993
Savage5520241986
Hope5420241985
Homer5219821977
Thompson Pas5220241983
Toklat5120241982
Hoonah4920241993
Elmendorf (Short)4819851984
Gweek River4520021994
Stikine River4420241998
St. Mary'S4420141993
Kodiak4319841983
Petersburg4319871987
Dillingham (Short)4119841984
Seward4019921982
Kodiak 23720241985
Unalakleet River3720221997
Cohoe3420232012

Orange-crowned Warbler Population Trend in Other States

arizonacaliforniacoloradoidahomontananevadanew-mexiconorth-dakotaoregonutahwashingtonwyoming

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