驯鹿在移动

每年秋天，25万头驯鹿聚集在一起，组成了北极西部的驯鹿群，这群驯鹿在阿拉斯加西北部进行了一次史诗般的迁徙。驯鹿从乌图科克河高地的产犊场向南迁移到苏厄德半岛的冬季牧场。秋天也是科学家们将无线电项圈系在牧群成员身上，追踪他们的位置和健康状况，获取有助于保护物种的信息的时候。当春天到来时，驯鹿将以相反的方式再次完成这一旅程，每年的总行程为2000英里。
原文：
Each fall a quarter-million caribou come together to form the Western Arctic Caribou Herd, a group that makes an epic migration through northwest Alaska. The caribou move south from their calving grounds in the Utukok River Uplands to their winter range on the Seward Peninsula. Fall is also the time when scientists attach radio collars to members of the herd, to track their location and health, and to gain information that will help conserve the species. When spring arrives, the caribou will complete the trip again in reverse, covering a total of 2,000 miles each year, give or take.
《© Michio Hoshino/Minden Pictures》