Real Dictionary

megapode in American English
any of a family (Megapodiidae) of large-footed, ground-dwelling gallinaceous birds of Australia and the East Indies that bury their eggs, often in mounds they have built of earth and vegetation
noun: any of several large-footed, short-winged gallinaceous Australasian birds of the family Megapodiidae, typically building a compostlike mound of decaying vegetation as an incubator for their eggs

megapode in British English
noun: any ground-living gallinaceous bird of the family Megapodiidae, of Australia, New Guinea, and adjacent islands. Their eggs incubate in mounds of sand, rotting vegetation, etc, by natural heat