Alright, goats. You’re going to migrate—whether you like it or not!

Goats were introduced to the Olympic National Park in Washington almost 100 years ago. But they make difficult neighbors. They eat and trample sensitive plants. They disturb soil and even hurt hikers! Between 2004 and 2016, the goat population in the park more than doubled. Now about 725 goats live there. That’s just too many.

So people shoot goats with tranquilizer darts. They capture them with nets. They blindfold the goats and put them into specially made slings. The goats dangle from helicopters on the way to their new home in another part of Washington, where they came from in the first place. The transplanted goats will help goat populations there grow.

The goal is to relocate 100 goats by September 24. Between now and next year, officials hope to move several hundred more.

(AP Photo: Goats are sedated, blindfolded, and put in harnesses on September 13.)