Synonyms to round the bend

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 hinges, off the track, off the wall, oriole, parrot, peep, phony, pip, pipe, plagiarist, poll-parrot, polly, polly-parrot, poseur, potty, quack, ringdove, roll, scold, screwball, screwballs, screwy, sheep, simulator, sing, singing bird, slaphappy, song sparrow, songbird, songster