Likes to winter in California

Each winter in the San Francisco Bay Area, as Western Kingbirds disappear, a few Tropical Kingbirds and Cassin's Kingbirds show up. This bird came closer and closer as I was photographing it. Finally, it perched directly above me and watched me work. In Southern Texas, both the Couch's Kingbird and the Tropical Kingbird occur. The fifth edition of NATIONAL GEOGRAPHIC Field Guide to the Birds of North America includes a discussion of how to distinguish the two species visually.