2Find out how Mo Willems became a bestselling children's author Did you know Mo Willems' Pigeon character started out as a doodle in a sketchbook? Explore the life and career of one of today's most popular and cherished children's authors. Full of fact-packed sidebars and direct quotes, this eye-opening biography showcases the influences, talents, and creativity that helped Willems rise to the top of bestsellers lists.