What is an Australian bird that looks like an ostrich?

The Laughing Kookaburra is an Australian native bird with a distinctive laughing call. It is the largest member of the kingfisher family, but it does not hunt for fish: rather, it captures lizards and snakes and occasionally small mammals.
The Laughing kookaburra is the only species of kookaburra with a very distinctive laughing call, that begins almost with a chuckle, before erupting into a raucous laugh. This is how the kookaburra defines its territory to other birds. The Blue-winged kookaburra also has a characteristic laughing call, though not as recognisable as that of the Laughing kookaburra.

Two other species of kookaburra are found in New Guinea and on the Aru islands of southeastern Indonesia, but these species do not "laugh".