The rarest goose on the planet is Hawaii's State Bird, the Nene. In the late 1700's there was around 25,000 nene across the entire state of Hawaii, but by the mid-1950s there were only about 30 Nene in existence, all of them living on the Big Island. Today, across the state, there are now about 3500, thanks to the contribution of Hawaii Volcanoes National Park Rangers.