WWU professor works to help protect mountain goats in the Cascades

When David Wallin was asked by the Sauk-Suiattle Tribe eight years ago to help figure out why the number of mountain goats in the Washington's Cascades was so low, he was puzzled.
"How could mountain goat populations possibly be in trouble?" wondered Wallin, an environmental science professor at Western Washington University.
Most of the alpine environment in the state that makes up mountain goat habitat is protected as national forest, park or wilderness, he said, so how could their numbers be dwindling?