In a special broadcast from Ithaca, N.Y., Ira Flatow and guests discuss bird migration, including how birds orient themselves using stars and magnetic fields, what bird banding projects reveal about the lives of migratory birds and how scientists track birds during migration using Doppler radar and microphones.
David Bonter, ornithologist, Cornell Lab of Ornithology, vice president, Braddock Bay Bird Observatory, leader, Project FeederWatch, Ithaca, N.Y.
Mark Deutschlander, president, Braddock Bay Bird Observatory, associate professor and chair, biology department, Hobart and William Smith Colleges, Geneva, N.Y.
Sidney Gauthreaux, professor emeritus, department of biological sciences, Clemson University, Clemson, S.C.
Andrew Farnsworth, post-doctoral researcher, Cornell Lab of Ornithology, Ithaca, N.Y.