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.

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。

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Some species of Arctic birds are threatened by recent sharp increases in the population of snow geese, which breed in the Arctic and are displacing birds of less vigorous species.

某些种类的北极鸟受到近来雪雁数量急剧增加的威胁，这些雪雁在北极繁殖，并且正在取代生命力较弱的鸟类。

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Once every three or four years, when conditions are right, the lake is covered with the pink birds as they stop flight to breed.

每隔三四年，条件适宜时，湖面上就会布满火烈鸟，它们停止飞行开始繁殖。

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The only Little Tern colony in Wales, the birds breed on the shore before migrating south in September.

BBC: A Little Tern protects two of its chicks

He puts the boom down to natural population growth - there are more birds to breed and so produce more chicks.

BBC: Parakeet in a London garden

Falconers develop a strong relationship and spiritual bond with their birds, and commitment is required to breed, train, handle and fly the falcons.

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