The male bowerbirds of Australia and New Guinea display an incredible artistic talent -- and all in the name of love! Collecting 'jewels' they set them in specially-built showcases and some even paint the walls with mashed berries. If all this isn't enough to woo potential mates, they also perform a most bizarre stiff-winged dance. But displaying darker emotions associated with sex, such as envy and jealousy, males will sometimes destroy a rival's construction and steal his jewels.

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