Frequents backyards, parks, and suburbs; favors mature deciduous trees. White face contrasts with black cap and blue-gray upperparts; belly is slightly grayer with brown on the undertail. Creeps along tree trunks and branches, often upside down, in search of seeds and insects. Small, roughly sparrow-sized with large head, no neck, and long, slightly upturned bill. Listen for insistent nasal yammering. Visits feeders.