Hawaiian goose or nene
The nene is the official state bird of Hawaii. Also known as the Hawaiian goose (Branta sandvicensis), the bird was declared endangered in 1967 with an estimated population of less than 30 birds. They live only in the Hawaiian islands of Maui, Hawaii and Kauai, and human encroachment is blamed for their diminishing numbers. Today, the birds are protected, number 2,500 as of 2011 and they're considered threatened.