Monthly Archives: July 2012

Do you think juvenile vampire bats would regurgitate food to their hungry parents?

The benefits of helping: direct and indirect Biologists divide the evolutionary benefits of helping others into two categories. Direct fitness benefits means helpers tend to have more offspring, all else being equal. Indirect fitness benefits (or kin selection) mean that … Continue reading

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Cooperative male alliances in bats

A paper just published on gelada baboons entitled “Concessions of an alpha male? Cooperative defence and shared reproduction in multi-male primate groups” claims to be among the first demonstrations of cooperative male defense of a female group in a mammal. But the authors seemed … Continue reading

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