bend the eyes, blink, bug, cackle, call, carol, case, cast, caw, chatter, cheep, chip, chipper, chirk, chirm, chirp, chirr, chirrup, chitter, chuck, clack, cluck, cock-a-doodle-doo, complaint, coo, croak, cronk, crow, cuckoo, direct the eyes, drum, flash, gabble, gaggle, gander, glance, glimpse, gobble, grumble, guggle, half an eye, honk, hoo, hoot, look, look over, make a reconnaissance, meddle, murmur, nose, ogle, outcry, peek, peer, pip, pipe, play peekaboo, play the spy, protest, protestation, pry, put under surveillance, quack, quick sight, rapid glance, reconnoiter, roll, scold, scout, scout out, sing, slant, snoop, sound, spy, spy out, squawk, squeak, squiz, stake out, stare, take a peep, trill, tweedle, tweet, twit, twitter, warble, watch, whistle, wink