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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.
Perhaps the strangest nests of all are those built by the species of Swiftlet in the genus Collocalia. They nest in caves and build their nests of saliva. To do this they have enlarged salivary glands during the breeding season. To make them even more amazing, these Swiflets often nest in pitch dark caves.ustralasian Bowerbirds are not the only birds to build structures that are not ever destined to be nests. Others include the Tooth-billed Cat Bird (Scenopoeetes dentirostris), also from Australia, and Jackson's Whydah (Euplectes jacksoni) from Kenya and Tanzania.