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What drives Yellowstone's massive elk migrations?

20:00 EDT 13 Jun 2019 | AAAS

(University of California - Berkeley) Yellowstone's migratory elk rely primarily on environmental cues, including a retreating snowline and the greening grasses of spring, to decide when to make the treks between their winter ranges and summer ranges, shows a new study led by University of California, Berkeley, researchers. The study combined GPS tracking data from more than 400 animals in nine major Yellowstone elk populations with satellite imagery to create a comprehensive model of what drives these animals to move.

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