Below are possible answers for the crossword clue A bird may have one.
4 letter answer(s) to a bird may have one
SONG
a distinctive or characteristic sound; "the song of bullets was in the air"; "the song of the wind"; "the wheels sang their song as the train rocketed ahead"
a short musical composition with words; "a successful musical must have at least three good songs"
a very small sum; "he bought it for a song"
the act of singing;
the characteristic sound produced by a bird; "a bird will not learn its song unless it hears it at an early age"
the imperial dynasty of China from 960 to 1279; noted for art and literature and philosophy
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