Pohakuloa Training Area, Hawaii, and later to SeaWorld San Diego, where it was attempted to have them reproduce in captivity. However, this was unsuccessful and the species became extinct with the death of the last individual in 1981. Surveys were conducted in the following years, but the species was certainly gone by then. It was removed from the USFWS Endangered Species List on February 23, 2004, due to extinction. Collection of specimens for museums and private collections must have had a temporary impact during the Japanese control over the islands. Although fewer than 100 specimens are on record, most were taken in the 1930s and 1940s for Japanese collectors; given the rather sedentary habits and small population size of the species, this may have jeopardized local populations to the point of extinction. Outside Japan, 7 specimens (including the type) are in the National Museum of Natural History, Paris, one in the Natural History Museum at Tring, two in the National Museum of Natural History, Washington D.C. and six in the American Museum of Natural History, New York City. There are reports of additional specimens in Cambridge, Massachusetts and Lisbon. References External links Pacific Worlds article on Saipan wetlands Anas Ducks Extinct birds of Oceania Bird hybrids Bird extinctions since 1500 Controversial bird taxa Birds described in 1894 Fauna of the Mariana Islands