Guild · Washington · BBS 2025 Release · 1966–2024

Seabirds In Washington

3 species in this guild. As a group they are -72% since 1972.

Guild Signals

guild collapsecomputed index

Seabirds as a group have fallen sharply in Washington, down 72% since 1972.

Forecast

If the recent trend holds, Seabirds in Washington is projected to fall about 100% by 2029 — from 0.09 in 2024 to a central estimate of 0.00 (95% range 0.00–0.76). A 5-year backtest shows a typical error of ±208.5%, with 100% of held-out values landing inside the 95% band.

-100%Change by 2029

0.00Projected 2029 index

0.00–0.7695% range

±208.5%Backtest error

Projection of the recent trend (dashed) with 80/95% bands — a projection, not a prediction. Habitat, climate, and land use are not modeled.

Year	Projected index	95% low	95% high
2025	0.00	0.00	0.76
2026	0.00	0.00	0.76
2027	0.00	0.00	0.76
2028	0.00	0.00	0.76
2029	0.00	0.00	0.76

Member Species In Washington

Seabirds species in Washington.

Marbled Murrelet	Alcidae	-88%
Pigeon Guillemot	Alcidae	-69%
Rhinoceros Auklet	Alcidae	-59%

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