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

Pigeon Guillemot Population Trend in Alaska

All statesGeneralists

Pigeon Guillemot in Alaska has declined: down 49% on the route-weighted index since 1985.

-49%Since 1985
12Routes In State
40Years

Notable Pigeon Guillemot Trends in Alaska

No notable trend signals for Pigeon Guillemot in Alaska. See the full index history below.

Pigeon Guillemot Population Forecast in Alaska

If the recent trend holds, Pigeon Guillemot in Alaska is projected to fall about 32% by 2029 — from 0.12 in 2024 to a central estimate of 0.08 (95% range 0.00–0.40). A 5-year backtest shows a typical error of ±66%, with 100% of held-out values landing inside the 95% band.

-32%Change by 2029
0.08Projected 2029 index
0.00–0.4095% range
±66%Backtest error
19832029
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
20250.110.000.43
20260.100.000.42
20270.090.000.41
20280.090.000.41
20290.080.000.40

Pigeon Guillemot Survey Routes in Alaska

Routes recording Pigeon Guillemot in Alaska.
Yakutat420232002
Zimovia Strt320241996
Kodiak 2320241985
Cold Bay (Short)319911991
Juneau Alt219861984
Adak220011983
Cold Bay220072005
Chiniak120241985
Zarembo120172017
Juneau120131985
Ketchikan120182017
Haines120241989

Pigeon Guillemot Population Trend in Other States

californiaoregonwashington

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