Except for the bristlehead in the lowlands of Borneo, magpie-shrikes are restricted to Australia and New Guinea and their in-shore islands. Peltopses are endemic to New Guinea, with one species occurring throughout the lowlands and the other in mountain ranges up to 9,900 ft (3,000 m) above sea level. In contrast, currawongs are endemic to Australia, restricted to southern and east coast Bassian regions north to Cape York Peninsula. The Australian magpie is also centered in Australia but, being adapted to open environments, ranges throughout the continent, with outliers in east Tasmania and the central portion of southern New Guinea. Only butcherbirds are represented by species in both Australia and New Guinea.
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