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Blue- capped cordon bleu African finches have an unusual courting ritual. Recently, scientists have discovered that in addition to bobbing and singing, both males and females perform a type of tap dance to attract the opposite sex, a behavior that has never been observed before in birds. The dancing was noted recently when viewing high- speed footage since it is not possible to detect this movement with the human eye. Researchers believe that the dancing may be a display of health and fitness.