Of the estimated 1,500 mountain goats that range in the Chilkoot and Chilkat drainages, there are seven, geographically discrete sub-populations, according to Kevin White, a wildlife research biologist for the Alaska Department of Fish and Game.

Preliminary research suggests there may even be genetic differences between those populations. That’s because goats don’t like to cross open water or valley floors, said White, who has been studying goats between here and Juneau since 2005.

“There are…