National Geographic : 1933 Oct
©Martin Munkacsi RIDING LIKE THE WIND, OSTRICH HUNTERS LET FLY THEIR WHIRLING "BOLAS" The "three Marias," gauchos call this tricky device of weights on a rope. The hunters first cut the bird they wish from theflock, then ride hard after it.When about ten yards away, whirling the bolas overhead, they let fly. The rope, to which is attached the lead or stone weights, wraps itself about thebird's neck and legs, and throws it (see page 476). "Bolas" and "boleadoras" are terms used interchangeably.