The Laysan albatross known as Wisdom in December 2016 at Midway Atoll National Wildlife Refuge

Wisdom, a Laysan albatross and the oldest known bird in the wild, tends to an egg at Midway Atoll National Wildlife Refuge. Wisdom, who is at least 69 years old, has raised at least 10 chicks since 2006 and as many as 40 in her lifetime.