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The satin bowerbird (Ptilonorhynchus violaceus) is a bowerbird endemic to eastern Australia. The male is vivid blue, whereas the female is dull brown. Mature males have violet-blue eyes and are uniformly colored black, however, light diffraction by the surface texture of the feathers results in an almost metallic sheen giving a deep shiny blue appearance. Immature males are colored and marked the same as females and are often mistaken for them. Females might be mistaken for the green catbird or spotted catbird with distinctively green/brown or otherwise entirely brown upper body and lighter under body with a distinct reticulated or scalloped pattern, but with very striking blue eyes. Like all bowerbirds, the satin bowerbird shows highly complex courtship behaviour. Mate choice in satin bowerbirds has been studied in detail. Males build specialised stick structures, called bowers, which they decorate with blue, yellow, and shiny objects, including berries, flowers, and plastic items such as ballpoint pens, drinking straws and clothes pegs. As the males mature they use more blue objects than other colours. Females visit these and choose which male they will allow to mate with them. In addition to building their bowers, males carry out intense behavioural displays called dances to woo their mates, but these can be treated as threat displays by the females. Nestbuilding and incubation are carried out by the females alone.

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