Giant nests housing up to 500 birds spotted in S. Africa

A giant nest is spotted in Kgalagadi Transfrontier Park in Northern Cape Province, South Africa. The extraordinary series of giant nests which can each house up to 500 birds take on different shapes on telephone poles and road signs. They even have separate breeding and roosting chambers. The nests are reportedly built by the sociable weaver birds, which live up to their name by living in large colonies. [Photo: VCG/Steve Toon]