The American bushtit (Psaltriparus minimus) is the only species in the family Aegithalidae found in the New World, and the only member of the genus Psaltriparus. In North America, it is referred to simply as "bushtit".
The American bushtit inhabits mixed open woodlands, often containing oaks and a scrubby chaparral understory; it also inhabits parks and gardens. It is a year-round resident of the western United States and highland parts of Mexico, ranging from Vancouver through the Great Basin and the lowlands and foothills of California to southern Mexico and Guatemala.
The American bushtit is one of the smallest passerines in North America, at 4.3 inches in length. It is gray-brown overall, with a large head, a short neck, a long tail, and a short stubby bill. The male has dark eyes and the adult female, yellow.
The American bushtit is active and gregarious, foraging for small insects and spiders in mixed species feeding flocks containing species such as chickadees and warblers, of 10 to over 40 individuals. Members of the group constantly make contact calls to each other that can be described as a short spit.
These photos were taken in our backyard in Costa Mesa, CA.