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Bowerbirds /ËbaÊÉrbÉrd/ make up the bird family Ptilonorhynchidae. They are renowned for their unique courtship behaviour, where males build a structure and decorate it with sticks and brightly coloured objects in an attempt to attract a mate.The family has 20 species in eight genera.he Ailuroedus catbirds are monogamous, with males raising chicks with their partner, but all other bowerbirds are polygynous, with the female building the nest and raising the young alone. These latter species are commonly dimorphic, with the female being more drab in color.
Because most bowerbirds are polygynous, meaning one male is the mate of more than one female, and these males build decorative bowers, they make excellent species for testing this idea. Males don't help the female build a nest, incubate the eggs, or raise the chicksâall they give her are their genes.o woo females, the males of 17 of the 20 known species of bowerbirds build structuresâoften resembling an arbor, or bower, with an artfully decorated platform. Benz has measured all the Macgregor's males' bowers he's found in this forest, so he can speak with authority about Donald's achievement.