St. Paul’s reindeer thrive without essential lichen

With no lichen left on St. Paul Island, reindeer are grazing on grass and digging up roots. (Photo: Paul Melovidov)For a long time, scientists thought reindeer would be big losers in climate change, but the reindeer on St. Paul Island are challenging that theory.
As their main winter food source has disappeared, the St. Paul herd has changed its diet so they can survive on the remote island. This adaptation could have global implications for reindeer facing a warming climate.
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