Tiny, scruffy gang-gleaning puffballs. Common in West Coast and parts of Rocky Mountains. Timing: year-round. Prefers oak and evergreen forests, scrublands, riparian and suburbs; sea level to 115K ft. Tiny with a short, thin bill; plumage is brown and gray. Nest helpers (often adult males) and breeding pair all sleep in the nest. Forage together, gleaning insects. Sometimes multiple flocks roost together for warmth. Pairs stay together for several years. Only example of genus Psaltriparus in the Americas. Social flocks of 10-40 year round. Diet includes small insects and spiders. Oldest wild individual recorded was 9. Population ~ 23 million.