Puffins Return to Scottish Island Famous for Curling Stones

For the first time in nearly a half century, puffins are returning to Ailsa Craig, a plug of volcanic rock off the west coast of Scotland. Curling aficionados already know the island as the world’s preferred source of curling stones.

Curling is the centuries-old sport in which people slide smooth granite stones across a 146-foot-long (45-meter-long) sheet of ice toward a bull’s-eye, trying to knock their opponents’ stones out of the way in the process. Stones used in the sport must withstand a healthy amount of abuse and constant freeze-thaw cycles.