Hawaiian Goose or N??n??, Branta sandvicensis, is a species of goose endemic to the Hawaiian Islands. It shares a recent common ancestor with Branta canadensis, the Canada Goose. The official bird of the State of Hawai??i, the N??n?? is exclusively found in the wild of the islands of Maui, Kaua??i and Hawai??i. A larger, extinct and possibly flightless species, the N??n??-nui (Branta hylobadistes) was present in prehistoric times on Maui; related, but hitherto undescribed forms also occurred on Kaua??i and O??ahu, and there was a gigantic, flightless relative on the island of Hawai??i.