Answer: birdsong

AnswerCrossword Clue
BIRDSONGAvian serenade
BIRDSONGCall from a cage
BIRDSONGRustic serenade.
BIRDSONGNightingale's serenade
BIRDSONGCall of the wild?
BIRDSONGIt may be heard in an aviary
BIRDSONGForest call
BIRDSONGSeries of tweets
birdsongthe singing or calling of birds, esp. songbirds
birdsongthe song of a bird