Entry 1 sense Webster, 1913 mallee bird · mal·lee· bird · IPA 01 The leipoa, or Australian moundbird; it incubates eggs naturally in sandy mounds. See Leipoa. 1. The leipoa, or Australian moundbird; it incubates eggs naturally in sandy mounds. See Leipoa.(Zool.) See: Leipoa Syn. mallee fowl, mallee-fowl, leipoa, lowan, Leipoa ocellata.