Egg messages 'tell chicks how to act'
MOTHER birds leave chemical "messages" in their eggs that shape the behaviour of their chicks, research has showed.
Nestlings respond to the signals by adjusting the way they beg for food, scientists found.
If chicks get a message that they will be reared by generous parents, they beg vigorously after hatching, say researchers at Cambridge University.
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Sunday 27 May 2012
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