Photo taken on Sept. 21, 2006 shows birds in the Huanghuagang Wetland in Cangzhou, north China's Hebei Province. Meng Derong, a biology associate professor, and many local volunteers have ringed at least 4,000 migratory birds in years for regular observation and monitoring. They have established a wildlife rescue station, saving more than 280 injured birds of nearly 40 species.(Xinhua Photo) Photo Gallery >>>

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