Synonyms to off the hinges

cuckoo, Philomel, ape, balmy, bananas, barmy, bats, batty, beany, bonkers, buggy, bughouse, bugs, bulbul, cackle, call, canary, carol, caw, chatter, cheep, chirk, chirp, chirr, chirrup, chitter, chuck, clack, cluck, cock-a-doodle-doo, conformist, coo, copier, copycat, copyist, counterfeiter, crackbrain, crackbrained, cracked, crackers, crank, cranky, crazed, crazy, croak, cronk, crow, daffy, daft, ding-a-ling, dippy, dissembler, dissimulator, dotty, drum, echo, echoer, echoist, faker, feathered songster, flaky, flipped, forger, freaked-out, fruitcakey, fruity, gabble, gaga, gaggle, gobble, goofy, guggle, harebrain, haywire, honk, hoo, hoot, hypocrite, imitator, impersonator, impostor, just plain nuts, kook, kooky, lark, loony, loopy, lunatic, mavis, mime, mimer, mimic, mimicker, mocker, mockingbird, monkey, nightingale, nut, nuts, nutty, off the track, off the wall, oriole, parrot, peep, phony, pip, pipe, plagiarist, poll-parrot, polly, polly-parrot, poseur, potty, quack, ringdove, roll, round the bend, scold, screwball, screwballs, screwy, sheep, simulator, sing, singing bird, slaphappy, song sparrow, songbird, songster