The nēnē-nui (Hawaiian: "great nēnē") or woodwalking goose (translation of Branta hylobadistes) is an extinct species of goose that once inhabited Maui and possibly (or closely related species) Kauaʻi, Oʻahu and perhaps Molokaʻi in the Hawaiian Islands. It is known from a large number of subfossil bones (several thousand bones from many dozens of individuals) found in Holocene cave sediments.