Yet they gather in some numbers on these apparently barren slopes. 然而却有一定数量的灰熊 聚集在这片不毛之地
300,000 Baikal teal gather to escape from the Siberian winter by migrating south to Korea - 30万只花脸鸭集体迁往南方的韩国 躲避西伯利亚的严冬