Adult puffins on an island off Maine’s coast. By the late 1800s, Atlantic puffins had almost disappeared from their historical nesting grounds in the Gulf of Maine, killed off by hunters for food and feathers, but over a century later, the birds are back.

Adult puffins on an island off Maine’s coast. By the late 1800s, Atlantic puffins had almost disappeared from their historical nesting grounds in the Gulf of Maine, killed off by hunters for food and feathers, but over a century later, the birds are back.