“They charm the female by vocal or instrumental music of the most varied kinds. They are ornamented by all sorts of combs, wattles, protuberances, horns, air-distended sacs, topknots, naked shafts, plumes, and lengthened feathers gracefully springing from all parts of the body. The males sometimes pay their court by dancing or by fantastic antics performed either on the ground or in the air.”—The Descent of Man, and Selection in Relation to Sex (1871)

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