DNA Shows It: Birds Are Promiscuous

PHOTO: In one ambitious study, British scientists found that female Blue-Tits prefer having their eggs fertilized by a male other than their social partner.

Here’s the warm and fuzzy part of this column: most birds really do mate for life. But here’s the cold side: They mess around.

And here’s the switch: Blame the ladies.

Ever since Charles Darwin postulated it would be to a bird’s evolutionary advantage to stick with the same mate for its entire life, poets and novelists and even scientists have thought that meant they would remain faithful

Article source: http://abcnews.go.com/Technology/birds-mate-life-cheat/story?id=18949572

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