The maleo is a large, black and white bird with a prominent medium-length tail. As its alternative name, maleo megapode suggests, it has characteristically large feet. This striking bird has a distinctive bony, dark casque on its crown, a yellowish face, and a bare pale bill (1). The thighs are black, and the belly white, with pink hues on the breast (4). This rare bird is usually silent but, especially around nesting sites, it can emit quite extraordinary noises. These include loud braying and, when in disputes, a duck-like quacking (4).
quoted from : http://www.arkive.org/maleo/macrocephalon-maleo/#text=Description