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The Laughing Kookaburra (Dacelo novaeguineae) is found in eastern and southwestern Australia in Eucalyptus forest and woodland, using riparian trees along major watercourses to extend inland or into primary forest. Laughing Kookaburras are also found on wooded and cleared farmland and in city parks and suburban gardens so long as appropriate nesting cavities are available. In some areas of overlap with the Blue-winged Kookaburra, the two species are interspecifically territorial; in other areas, Blue-winged Kookaburras use drier habitats.
The Laughing Kookaburra's well studied diet includes earthworms, snails, diverse arthropods, and small vertebrates. Most prey is taken from the ground. Snakes up to 1 m long may be grabbed behind the head, beaten violently on the ground or on a perch, then swallowed head first. Scraps may be taken at picnic areas. Undigested food is regurgitated as pellets, which accumulate beneath regular roosting sites.
A breeding pair is often assisted by 4 or 5 "helpers", mostly male young from previous years.
Lifespan in the wild is up to around 11 years. The Laughing Kookaburra is common over most of its range and has generally benefited from human settlement, although density declines where farmland is converted to housing.
(Woodall 2001 and references therein)