Marbled Murrelet Welfare and Old-Growth Forest Dependency in the Pacific Northwest

The marbled murrelet is a seabird uniquely dependent on old-growth forest for nesting, making it severely threatened by logging and requiring extraordinary conservation measures.

Key Facts

Marbled murrelets nest on large, moss-covered branches of old-growth trees several kilometres from the sea
They are one of the few seabirds that nest in inland forests rather than coastal cliffs
The Pacific Northwest population is listed as Threatened under the US Endangered Species Act
Logging of old-growth forest has eliminated nesting habitat across much of the historical range
Nest success is extremely low due to corvid predation in fragmented forest landscapes

Welfare Considerations

Marbled murrelet welfare is fundamentally dependent on the availability of large, structurally complex old-growth trees for nesting. The species has evolved to exploit a highly specific nesting substrate that takes centuries to develop, making habitat loss essentially irreversible on any relevant timescale. Nest failure through corvid predation is exacerbated in forest fragments where corvid populations are subsidised by human food sources. Protecting remaining old-growth forest and managing corvid populations in nest areas are the primary welfare and conservation interventions.

What You Can Do

Support old-growth forest conservation organisations in the Pacific Northwest including old-growth reserves
Advocate for protection of remaining old-growth forest on federal and state lands
Reduce outdoor food waste that subsidises corvid populations near murrelet nesting forests
Contribute murrelet sightings to Pacific Northwest monitoring networks
Engage with timber companies on old-growth retention standards in certified forestry operations