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Richard Prum on Birds, Beauty, and Finding Your Own Way

Conversations with Tyler

What's the Most Fundamental Factor of Sexual Dimorphism in Birds?

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Most birds don't have a penus, which means that one of the things that happens in avian evolution that's distinct from mammals is that the kids require a lot of care. So we usually thought that you have no social monogamy, at least two birds helping raise the young. But there's another possibility, which is that they could evolve to be so needy and grow up quickly because they manageto get males at the nest. And my own theory, is that female birds preferred mates that did not have a penis. They were no longer subject to xual coercion or sexual violence. That means that they have freedom of choice tat what do they do with their freedom of choice?

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