More than 95 per cent of Hawaii's original fauna and flora occurs nowhere else in the world. In 1965 the compiler of the Birds Red Data Book, Jack Vincent, listed 25 of Hawaii's original 69 bird species as extinct. With the discovery of a new not yet named Honeycreeper (Drepanidiae) on Maui in 1973, by a National Science Foundation sponsored expedition and the re-discovery of the Maui nukupuu Hemignathus lucidus effinus in 1967, the count changed to 70 known species with 24 extinct. Of Hawaii's remaining 46 endemic birds 27 are threatened with extinction.