Passerine

passerine \ˈpa-sə-ˌrīn\ adjective: of or relating to the largest order (Passeriformes) of birds which includes over half of all living birds and consists chiefly of altricial songbirds of perching habits

Etymology: Latin passerinus of sparrows, from passer sparrow

Did you read that? Over half of all living birds are passerines. Over half of all living birds. Watch out—they're everywhere...