Answer: squawk

AnswerCrossword Clue
SQUAWKComplain, informally
squawkto utter squawks
squawkto complain
squawkto utter a loud, harsh cry
squawkloud harsh cry
SQUAWKBlabber
SQUAWKLoudly voice one's objections
SQUAWKNoisy complaint
SQUAWKKvetch a lot
SQUAWKChicken's complaint?
SQUAWKComplain
SQUAWKComplaint of a sort.
SQUAWKBird's cry.
SQUAWKBird sound.
SQUAWKCustomer's complaint.
SQUAWKLame duck sound?
SQUAWKPut up a fuss
SQUAWKGripe
SQUAWKBellyache