Bird Conservation Region 5

Northern Pacific Rainforest

An ecological region spanning Alaska, California, Oregon, Washington, with 163 survey routes. BCRs are the natural unit for bird trends.

What Is Moving Here

long arc declinecomputed index

Herring Gull has collapsed in Northern Pacific Rainforest: down 98% on the route-weighted index since 1972.

long arc increasecomputed index

Eurasian Collared-Dove has surged in Northern Pacific Rainforest: up 91× on the route-weighted index since 2008.

long arc declinecomputed index

Common Murre has collapsed in Northern Pacific Rainforest: down 98% on the route-weighted index since 1974.

long arc increasecomputed index

Canada Goose has surged in Northern Pacific Rainforest: up 20× on the route-weighted index since 1974.

long arc declinecomputed index

Horned Lark has collapsed in Northern Pacific Rainforest: down 98% on the route-weighted index since 1974.

long arc increasecomputed index

Ruby-crowned Kinglet has surged in Northern Pacific Rainforest: up 16× on the route-weighted index since 1970.

How Guilds Are Faring

Survey Routes

Species By Family

Osprey Pandionidae

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