“Mama Duck,” the world’s largest rubber duck, is making its first-ever trip to Maryland. While Mama Duck hasn’t been officially listed by Guinness World Records, owner of the duck, Craig Samborski, says “Nobody’s challenged me on the fact that it’s the largest.” Mama Duck sits at 61 feet tall and weighs 15 tons, that’s approximately 6 times the weight of a Chevrolet Suburban.