Some ranchers plan to raise the lowest fence strands so pronghorn, like these near Medicine Hat, Alberta, can more easily slip under during their winter migration.
一些牧场主计划提高最低栅栏索，以便在冬季迁徙期间，如亚伯达梅蒂逊哈市附近的这些叉角羚能更容易从下面溜过去。
Soon after, the reindeer, too, start their winter migration.
不久，驯鹿也开始了他们的冬季迁移。
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