Fauna of Australia group of endemic parrots, order Psittaciformes. Australian parrots comprise a sixth of the world's parrots, including many cockatoos and galahs. The kookaburra is the largest species of the kingfisher family, known for its call, which sounds uncannily like loud, echoing human laughter. The passerines of Australia, also known as songbirds or perching birds, include wrens, robins, the magpie group, thornbills, pardalotes, the huge honeyeater family, treecreepers, lyrebirds, birds of paradise and bowerbirds. The satin bowerbird has attracted the interest of evolutionary psychologists; it has a complex courtship ritual in which the male creates a bower filled with blue, shiny items
Rufous-bellied kookaburra and rufous in females and immature birds. Rufous-bellied kookaburras are smaller than other kookaburra species at around as against the laughing kookaburra's and about as against the laughing kookaburra’s . Despite this major size difference, the rufous-bellied kookaburra has been known to form (infertile) hybrids with all other kookaburra species, though available genetic studies suggest it is clearly the most distant of the four. This kookaburra is unusual in that it occupies dense rainforests (as opposed to the open country preferred by other kookaburras) and does not live in cooperative breeding family groups but singly or when breeding in pairs.