Sent_en: 2zh This contrasted to a May survey that showed fewer ducks and waterfowl nesting areas in the state with the population of breeding ducks numbering 1.6 million, down from 1.7 million in 2004.
Sent_yy: 这与五月份的调查形成对比，五月的调查显示随着2004年种鸭的数量由170万只下降至160万只，南达科他州的鸭子和水禽筑巢的区域均有所减少。