1821, probably of imitative origin (compare dialectal Italian squacco "small crested heron"). Related: Squawked; squawking. Squawk-box "loud-speaker" is from 1945.
squawk (n.)
1850, from squawk (v.).
she awoke to the squawk of chickens
the squawk of car horns
squash
squashy
squat
squatter
squaw
squawk
squeak
squeaky
squeal
squeamish
squeegee