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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.
The common cuckoo does not make a nest of its own, and they do not bring up their own young. Instead, the female lays her eggs in the nests of other birds. Each female cuckoo specialises in just one host species, and lays camouflaged eggs in that bird's nest.For example, a cuckoo which lays its eggs in reed warbler nests will lay eggs that look like those of a reed warbler.The female cuckoo spends a lot of time watching the birds at the nest where she wants to lay an egg.or example, a cuckoo which lays its eggs in reed warbler nests will lay eggs that look like those of a reed warbler. The female cuckoo spends a lot of time watching the birds at the nest where she wants to lay an egg.