- - Croon
- - It's a bit bleak post bellum so sing like a bird!
- - Singing fly?
- - Emulate a nightingale
- - Sing
- - Sing in Western ball forgoing money
- - Sing like a canary
- - Bird's song
- - Sing quaveringly
- - Trill
- - It's trilling
- - Imitate a prothonotary bird
- - Carol
- - Birds do it
- - Sing like a bird
- - Birdsong.
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