Each year in April, swans and other rare birds return from the south to live and breed there.

每年四月，天鹅和其他稀有禽类都会从南方飞回这里生活繁殖。

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Rare birds and people from other host was infected with influenza virus, but they can be transmitted to the same influenza strain has its own pig.

珍稀鸟类和人民从其他主机感染了流感病毒，但他们可以传播到同一流感有自己的猪。

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It is the breeding ground of almost 100 species of birds, many of which are rare or endangered. Some 80 other bird species migrate and seek refuge there every winter.

有约100种鸟类在这个保护区内生活繁衍，其中许多是稀有濒危鸟类，另外还有大约80种侯鸟每年到这里过冬。

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As part of the behind-the-scenes panda experience, a private guide shuttles guests around the rest of the 260-acre preserve, which also houses red pandas, golden monkeys, cranes and other rare birds.

BBC: Play one-on-one with a giant panda

But it said persistent bad weather and low temperatures meant only half survived, while other rare birds including goshawks have also struggled.

BBC: Cold weather kills three Kielder osprey chicks

The corpses of several rare birds, along with poisoned bait and other evidence, were removed.

ECONOMIST: Technology to the rescue