Which male bird builds a bower and decorates it with blue objects to attract mates?

The male satin bowerbird builds a bower and decorates it with blue objects to attract mates.

Found in eastern Australia, the satin bowerbird is famous for its elaborate courtship structure. The male constructs a passage-like arrangement from sticks, then surrounds it with ornaments such as berries, flowers, shells and human-made objects. Blue items become especially prominent as the male matures, and plastic straws, bottle caps and clothes pegs may appear alongside natural materials.

The bower is not a nest. Females build the nest, lay the eggs and handle incubation; the male’s structure is a display arena used during courtship. Females inspect several bowers and may judge both the decoration and the male’s behavior.

A common mix-up is the Vogelkop bowerbird, which also builds a remarkable bower but is a different species with different decorating habits. Satin bowerbird males are also known to steal ornaments from rivals and damage competing bowers.