Californian Birds That Migrate via the Pacific Flyway

A Continental Superhighway for Birds

The Pacific Flyway is a major north–south migration corridor stretching from Alaska and Arctic Canada to Central and South America. California's diverse habitats—coastal wetlands, Central Valley refuges, Sierra forests, desert oases—make it a critical hub for dozens of migratory species.

Major Bird Groups Using the Flyway

• Waterfowl: Ducks (Northern Pintail, Mallard, Cinnamon Teal), Geese (Snow, Ross's, Cackling), Swans (Tundra).
• Shorebirds: Western Sandpiper, Dunlin, Long-billed Dowitcher, American Avocet, Black-necked Stilt.
• Raptors: Red-tailed Hawk, Swainson's Hawk, Golden Eagle, Peregrine Falcon, Osprey.
• Passerines (Songbirds): Warblers (Yellow, Wilson's, Townsend's), Sparrows (Golden-crowned, White-crowned, Savannah), Flycatchers, Vireos.

Iconic Californian Species on the Flyway

• California Condor (Gymnogyps californianus): Critically endangered; reintroduced populations in Big Sur, Pinnacles, Tejon Range soar the flyway corridors.
• Bald Eagle (Haliaeetus leucocephalus): Winters at reservoirs and rivers; breeds in northern CA.
• Great Blue Heron (Ardea herodias): Year-round in wetlands; some migrate from north.
• Snowy Egret (Egretta thula): Coastal marshes; striking yellow feet.
• Western Sandpiper (Calidris mauri): Massive flocks on mudflats (Humboldt Bay, SF Bay, Salton Sea).
• Black-throated Sparrow (Amphispiza bilineata): Desert scrub migrant (Mojave, Colorado Desert).
• Golden-crowned Sparrow (Zonotrichia atricapilla): Winters in CA chaparral/woodlands; breeds in Alaska/BC.

Key Stopover Sites in California

Sacramento & San Joaquin Valley refuges (Sacramento NWR, Merced NWR), San Francisco Bay, Salton Sea, Mono Lake, Bolinas Lagoon, Morro Bay.

The Pacific Flyway connects breeding and wintering grounds across hemispheres—California is its crossroads.