Peter Ilich Tchaikovsky did not, after all, write Duck Pond. The whooper swan, like its onomatopoeic cousins, the whistling and the trumpeter, belongs to an elegant society of sisters; the mute ...

Young whooper swans practice flying in Rongcheng, Shandong province, to prepare for their upcoming long-distance migration. [Photo by Li Xinjun/For chinadaily.com.cn] Young whooper swans have ...