鸭子是在有大量水的地方觅食和繁殖的鸟类，但近几十年来，由于干旱，它们的栖息地一直在缩小。
Ducks are birds that feed and breed in areas where there is a lot of water, but their habitats have been shrinking in recent decades because of the droughts.
候鸟面临着许多威胁，其中主要的是栖息地遭受破坏，这使它们失去了觅食和栖息之地。
Migrating birds face many threats, chief among them habitat destruction: the loss of necessary places to feed and rest.
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