The Nene (Branta sandvicensis) is the world's rarest goose and is endemic to the Hawaiian Islands. It derives its scientific name from the Sandwich Islands, as Hawaii was once called. The Nene, related to the Canada goose (Branta canadensis) is non-migratory and has partially webbed feet (semi terrestrial) that enables it to walk better on the lava terrain of its habitat. Once reduced to a population of only 30 birds, the Nene has responded well to conservation efforts, but is still a vulnerable species. It derives its name from a distinct soft call that sounds like "nay nay". The Nene is the official bird of the State of Hawaii. This pair was photographed on Kauai where the bird is still found in the wild.