In the Laysan albatross, for example, previous research has shown that a third of all bonded pairs in a Hawaii colony are two females. This behavior helps the birds, whose colony has far more females than males, by allowing them to share parenting responsibilities. It also gives more stability to the offspring of males, already bonded to a female, who mate opportunistically with females in a same-sex couple. Such a dynamic, then may force gradual changes in behavior and even physical appearance of the birds, the authors note.
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sennoma
2009-06-17 22:21
glbt
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science
http://www.scientificamerican.com/article.cfm?id=gay-animals-and-evolution
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