Mothers give interloper's offspring a head start in life

A new study has revealed that mother birds can provide an early advantage to the chicks that they have sired with their non-social partner (known as extra-pair offspring).

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<p><a href="http://www.physorg.com/news161518898.html">Mothers give interloper's offspring a head start in life</a></p> <p>A new study has revealed that mother birds can provide an early advantage to the chicks that they have sired with their non-social partner (known as extra-pair offspring).</p>