Meet the oldest known wild bird, Wisdom, a Laysan albatross. At age 75, she is still raising chicks: this is her latest, whom she is looking after at their nest at Midway Atoll national wildlife refuge, Hawaii, US. Researchers estimate she has laid 60 eggs in her long life, and is on at least her second husband.
Photograph: Dan Rapp/USFWS/SWNS
