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Study investigates 'divorce' among Galapagos seabirds

ority of the females in this group gambled on a new mate, sometimes one that had never bred before.

This is one of the few studies that addresses divorce in successfully breeding bird pairs, Maness said. “This study really predicts that the probability of divorce increases with the birds’ success at breeding and raising a chick, because the effort required may tire out the male and consequently his mate may reject him.”

It also shows that males of this species are probably never permanently in or out of the mating game, in contrast to many other animals, she said. A male Nazca booby cast off by a current mate may be selected by a different female the next year, after he has had a chance to regain his condition.


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Source:Wake Forest University


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