Answer: oscines

AnswerCrossword Clue
OSCINESSongbirds
OSCINESFamily of many singing birds.
OSCINESSuborder of birds
oscinesof, belonging to, or pertaining to the suborder Oscines, of the order Passeriformes, comprising the songbirds that have highly developed vocal organs
oscinesOSCINE, any of the family of songbirds
oscinesoscine bird