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| Migratory whooper swans bask in the morning sunshine at Qinghai Lake in northeastern Qinghai province on Nov 27. [Photo/Xinhua] |
Biodiversity efforts boost birds' numbers&4
Thousands of whooper swans have descended on Qinghai Lake, creating a pastoral picture on the misty water under the glow of a winter sunrise.
The migratory birds usually arrive at the end of September. About 4,000 of the birds have been landing at the lake since 2008, a sharp rise from the 1,000 that would spend winter at the lake before 2008.
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