A group of ruddy shelducks perch on a beach in Yellow River Wetland in Mengjin county in Luoyang, Central China's Henan province, Jan. 31, 2008. Yellow River Wetland is a National Natural Reserve with a total area of 68 thousands hectare in Henan province. It's a bird breeding place with over 41 types of animals under first-grade and second-grade protection at the state level. [Photo/Xinhua]