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Species · Alaska · BBS 2025 Release · 1966–2024

Common Eider Population Trend in Alaska

All statesWaterfowl

Common Eider in Alaska has risen sharply: up 69% on the route-weighted index since 1986.

+69%Since 1986
7Routes In State
27Years

Notable Common Eider Trends in Alaska

long arc increasecomputed index

Common Eider has risen sharply in Alaska: up 69% on the route-weighted index since 1986.

Common Eider Population Forecast in Alaska

If the recent trend holds, Common Eider in Alaska is projected to rise about 434% by 2029 — from 0.24 in 2024 to a central estimate of 1.3 (95% range 0.00–2.6). A 5-year backtest shows a typical error of ±302.6%, with 60% of held-out values landing inside the 95% band.

+434%Change by 2029
1.3Projected 2029 index
0.00–2.695% range
±302.6%Backtest error
19822029
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
20251.20.002.5
20261.20.002.5
20271.20.002.6
20281.30.002.6
20291.30.002.6

Common Eider Survey Routes in Alaska

Routes recording Common Eider in Alaska.
Kodiak 22220091986
Cape Nome1620241993
Kotzebue1520102008
Homer1219821982
Kuiu Island220042004
Council220231994
Kodiak119831983

Common Eider Population Trend in Other States

maine

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