A white bison calf walking next to an adult bison. Photo courtesy of Matt Brotherton / Neal Smith National Wildlife Refuge / USFWS Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. A rare white bison ( Bison bison ) calf was born at the Neal Smith National Wildlife Refuge in Prairie City, Iowa. Most newborn bison are born with a reddish or brown coat, and the National Park Service estimates that white bison are born every one in one million births. A white bison calf was born at Yellowstone National Park in 2024 and was the first recorded there. Refuge Manager Scott Gilje told WHO Des Moines this is the first time a white bison has been born at the refuge and it’s “something very special.” According to the National Park Service, white bison are very rare, with an estimated one in 1 million births being a white bison in the wild. Whitish bison calf with adult bison on the prairie.…