Voice Differences between sexes in the American Coot

American Coot (Fulica americana) Science Article 3

abstract

American Coot (Fulica americana) exhibits no sexual dimorphism in plumage characters and although the males average about seven per cent larger than females. I have found, however, that the sexes can be recognized by differences in voice.

Gordon W. GULLION, FROM FIELD AND STUDY

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