小橋 昭彦 2007年12月26日

UEA – A helping hand from the ‘grandparents’
A team of scientists led by the University of East Anglia has discovered the existence of ‘grandparent’ helpers in the Seychelles warbler ? the first time this behaviour, which rarely occurs except in humans, has been observed in birds.
生殖機能を失った年寄りが生物界に果たせる役割は何か。それは子育てを応援すること。……というおばあさん仮説が、鳥でも確認されたと。

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