Band-tailed pigeon | Smithsonian’s National Zoo and Conservation Biology Institute https://nationalzoo.si.edu/animals/band-tailed-pigeon
A large pigeon that resembles its more common cousin, the band-tailed pigeon is a swift flier. Observers in the wild may see this bird traveling through the forests of western North America in large flocks during its annual migration along the Pacific Coast.
Their breeding grounds stretch along the Pacific Coast, through California, Oregon, Washington