birdcall

名词 birdcall:

1. the characteristic sound produced by a bird
   同义词：call, birdsong, song
2. a device for imitating a birdcall

bird.call

n.（名词）
The song or cry of a bird.
鸟语或鸟叫声

An imitation of the song or cry of a bird.
摹仿鸟叫的声音
A small device for producing this sound.
产生这种叫声的小器具