BirdAnalyst
Species · BCR 5 · BBS 2025 Release · 1966–2024

Black-legged Kittiwake In Northern Pacific Rainforest

All regionsNorthern Pacific RainforestWetland birds

Black-legged Kittiwake in Northern Pacific Rainforest has collapsed: down 81% on the route-weighted index since 1984.

-81%Since 1984
7Routes In Region
20Years

Notable Signals

long arc declinecomputed index

Black-legged Kittiwake has collapsed in Northern Pacific Rainforest: down 81% on the route-weighted index since 1984.

Forecast

If the recent trend holds, Black-legged Kittiwake in Northern Pacific Rainforest is projected to stay roughly flat through 2029, near 0.06 (95% range 0.00–1.6). A 5-year backtest shows a typical error of ±1322.4%, with 100% of held-out values landing inside the 95% band.

n/aChange by 2029
0.06Projected 2029 index
0.00–1.695% range
±1322.4%Backtest error
19702029
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
20250.100.001.6
20260.090.001.6
20270.080.001.6
20280.070.001.6
20290.060.001.6

Routes In Northern Pacific Rainforest

Routes recording Black-legged Kittiwake in Northern Pacific Rainforest.
TaholahWASHINGTON41970
Mitkof IsleALASKA32003
CordovaALASKA22022
YakutatALASKA22024
SewardALASKA11984
JuneauALASKA11996
HainesALASKA11996

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