Male Java sparrows may coordinate their bill-clicking sounds with the notes of their song. Birds may communicate using both vocalizations and movement, as for instance occurs during courtship displays ...
Listen closely to a Java sparrow sing: Interspersed among the notes will be clicks that the bird makes with its bill. All male birds use the clicking sounds in their songs — and the patterns appear to ...
Male Java sparrows may coordinate their bill-clicking sounds with the notes of their song, according to a study published May 20, 2015 in the open-access journal PLOS ONE by Masayo Soma and Chihiro ...
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