Seagulls look for food at the estuary of Xinkai River in Qinhuangdao City, north China's Hebei Province, Feb. 26, 2015. As temperature rises and ice melts, a large number of seagulls come to Qinhuangdao, a sound stop for seagulls' migration due to its good ecological environment. (Xinhua/Yang Shiyao)

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