Portsmouth Herald PORTSMOUTH — On Tuesday, April 20 at 7 p.m., ornithologist, naturalist, and Pulitzer finalist Scott Weidensaul comes to The Music Hall’s stage as part of the Innovation + Leadership series. Weidensaul will discuss his new nature book "A World On The Wing," an exhilarating exploration of the science and wonder of global bird migration in the face of climate change. “Weidensaul’s writing on the extraordinary journeys birds take around the world makes this book the ultimate guide,” says Jameson French, CEO of Northland Forest Products and the evening’s moderator. “As a lifelong birder, I’m looking forward to the knowledge he will share with us about migration patterns and the challenges birds face, and we’re lucky to have him as a resident of New Hampshire!”