The nene is the official state bird of Hawaii. Also known as the Hawaiian goose, Branta sandvicensis 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, while the birds are protected, they’re still at risk. Surprisingly, one of their greatest current threats are errant golf balls, as the animals like to nest in the grassy knolls common to manicured golf resorts.