Blue-winged kookaburra highly aggressive in the first week of life, and the youngest chick is often killed by the older chicks during this period. Once fledged, juvenile birds need to be taught how to hunt by their parents for a further 6–10 weeks before they can properly fend for themselves. The red goshawk and rufous owl prey upon the blue-winged kookaburra. Adult birds are also slow flyers and vulnerable to being hit by cars on country roads. Nests are susceptible to raids by Olive Pythons, quolls and goannas. Blue-winged kookaburra The blue-winged kookaburra ("Dacelo leachii") is a large species of kingfisher native
Laughing kookaburra with dark brown bars and white tips on the feathers. The heavy bill is black on top and bone-coloured on the bottom. The subspecies "D. n. minor" has a similar plumage to the nominate but is smaller in size. The laughing kookaburra can be distinguished from the similarly sized blue-winged kookaburra by its dark eye, dark eye-stripe, shorter bill and the smaller and duller blue areas on the wing and rump. Male blue-winged kookaburras also differ in having a barred blue and black tail. The name "laughing kookaburra" refers to the bird's "laugh", which it uses to establish territory among