What killed St. Paul’s woolly mammoths?

What killed the woolly mammoths on St. Paul Island? Thirst. For the first time, scientists have pinpointed the date — 5,600 years ago — and a likely cause of extinction. They believe the environmental changes that killed the animals mirror today’s climate changes.
A woolly mammoth on display in the Royal BC Museum. (Wikimedia commons photo by FunkMonk)Six thousand years ago, St. Paul Island looked about the same except for one big difference: There were mammoths.