| http://www.w3.org/ns/prov#value | - Although an animal singing by rubbing together parts of its body is a practice common among arachnids and insects, only one vertebrate is known to ???sing,??? or even to make noise, in that manner.Male club-winged manakins, found in the rainforests of Ecuador, make a series of high-pitched notes, so fast that the individual tones are indistinguishable, every time they flap their wings.
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