Ape, Roll, Scold, Screwy, Sheep, Simulator, Sing, Songbird, Squawk, Thrush, Trill, Tweet, Twit, Twitter, Wacky, Warble, Warbler, Whistle, Balmy, Bananas, Bats, Batty, Beany, Buggy, Bugs, Cackle, Call, Canary, Carol, Caw, Chatter, Cheep, Chirp, Chuck, Cluck, Conformist, Coo, Copier, Copycat, Copyist, Cracked, Crackers, Crank, Cranky, Crazed, Crazy, Croak, Crow, Daffy, Daft, Dotty, Drum, Echo, Flaky, Flipped, Forger, Fruity, Gabble, Gaga, Gaggle, Gobble, Goofy, Haywire, Honk, Hoot, Hypocrite, Imitator, Impersonator, Impostor, Lark, Loony, Loopy, Lunatic, Mime, Mimic, Mimicker, Mocker, Mockingbird, Monkey, Nightingale, Nut, Nuts, Nutty, Parrot, Peep, Phony, Pip, Pipe, Plagiarist, Poseur, Potty, Quack