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
Herring Gull has collapsed in Northern Pacific Rainforest: down 98% on the route-weighted index since 1972.
Eurasian Collared-Dove has surged in Northern Pacific Rainforest: up 91× on the route-weighted index since 2008.
Common Murre has collapsed in Northern Pacific Rainforest: down 98% on the route-weighted index since 1974.
Canada Goose has surged in Northern Pacific Rainforest: up 20× on the route-weighted index since 1974.
Horned Lark has collapsed in Northern Pacific Rainforest: down 98% on the route-weighted index since 1974.
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
Hawks, Eagles & Kites Accipitridae
Bushtits Aegithalidae
Larks Alaudidae
Kingfishers Alcedinidae
Auks, Murres & Puffins Alcidae
Ducks, Geese & Waterfowl Anatidae
Herons, Egrets & Bitterns Ardeidae
Waxwings Bombycillidae
Nightjars & Nighthawks Caprimulgidae
New World Vultures Cathartidae
Treecreepers Certhiidae
Plovers & Lapwings Charadriidae
Dippers Cinclidae
Pigeons & Doves Columbidae
Crows, Jays & Magpies Corvidae
Finches Fringillidae
Cranes Gruidae
Oystercatchers Haematopodidae
Swallows & Martins Hirundinidae
Blackbirds & Orioles Icteridae
Shrikes Laniidae
Gulls, Terns & Skimmers Laridae
Wagtails & Pipits Motacillidae
Osprey Pandionidae
Chickadees & Titmice Paridae
Wood-Warblers Parulidae
New World Sparrows Passerellidae
Old World Sparrows Passeridae
Pelicans Pelecanidae
Cormorants Phalacrocoracidae
Pheasants, Grouse & Turkeys Phasianidae
Woodpeckers Picidae
Gnatcatchers Polioptilidae
Sandpipers & Allies Scolopacidae
Owls Strigidae
Starlings & Mynas Sturnidae
Sylviid Warblers Sylviidae
Hummingbirds Trochilidae
Wrens Troglodytidae
Thrushes Turdidae
Tyrant Flycatchers Tyrannidae
Barn-Owls Tytonidae
Source: USGS North American Breeding Bird Survey, retrieved 2026-05-22.