A Laysan albatross believed to be the world’s oldest wild bird has hatched a healthy chick at the age of at least 70. Wisdom the albatross welcomed her chick on a cold winter’s day at Midway Atoll National Wildlife Refuge. The site, managed by the U.S. Fish and Wildlife Service (USFWS), is located at the northern end of the Hawaiian archipelago and is home to the largest colony of albatrosses in the world. “After taking great care of their egg for the past month and watching over the several day hatching process, her mate Akeakamai is now out foraging at sea while she broods the hatchling,” the nonprofit Friends of Midway Atoll posted on Facebook after the hatchling emerged on Feb. 1. Akeakamai has been Wisdom’s partner since 2012. Since albatrosses usually mate for life, it is believed that Wisdom must have outlived a number of previous partners. “Wisdom laid her egg …