Like all bowerbirds, the satin bowerbird shows highly complex courtship behaviour. The flame bowerbird ("Sericulus ardens) "is one of the most brilliantly coloured bowerbirds. Male bowerbirds build elaborately decorated structures called bowers to attract mates. Other species present include Australian bustards, bush stone-curlews, western bowerbirds, painted finches and canary white-eyes. In Australia, male satin bowerbirds collect blue objects to decorate their bowers with. The male Regent Bowerbird builds a bower and will mate with several female bowerbirds. Bowerbirds have also been observed creating optical illusions in their bowers to appeal to mates. Satin bowerbirds commonly mimic other local species as part of their courtship display. Male satin bowerbirds are known to destroy and steal from the bowers of one another. Satin bowerbirds nest between October and February. Spotted bowerbirds have a diverse range of vocalisations. Satin bowerbirds are aggressive when foraging, frequently attempting to displace other birds from fruit trees. The bowerbirds are small to medium-sized passerine birds. Mate choice in satin bowerbirds has been studied in detail. The nocturnal section also has a pair of satin bowerbirds.