Spring migration patterns, habitat use, and stopover site protection status for two declining waterfowl species wintering in China as revealed by satellite tracking

by Si, Yali, Xu, Yanjie, Xu, Fei, Li, Xueyan, Zhang, Wenyuan, Wielstra, Ben, Wei, Jie, Liu, Guanhua, Luo, Hao, Takekawa, John, Balachandran, Sivananintha, Zhang, Tao, de Boer, Willem F., Prins, Herbert H.T., Gong, Peng