The Ruby-throated Hummingbird is the only hummingbird that breeds on Cape Cod.  They are frequently found around hummingbird feeders and backyard flower gardens.  Females have glittering green upperparts, a white chin and throat, and whitish underparts with buff colors on their sides.  This adult female was perched near a bunch of bright red cardinal flowers in a yard on Mill Street.  Hummingbirds have amazing flight patterns that make for endless entertainment.