# 22. You perform an experiment to test whether female birds prefer males with longer tail feathers....

###### Question:

22. You perform an experiment to test whether female birds prefer males with longer tail feathers. You find that they do, and, in fact, they prefer even longer tail feathers than you ever see on males in the population. Assuming that this trait has had enough time to evolve to an optimum, what is the most likely explanation for why tail feathers are not even longer in the population?

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