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Colin Allen interviews Indiana University biology professor Ellen Ketterson, a pioneer in the study of animal behavior, particularly bird behavior. Ketterson maintains study sites from Virginia to California to South Dakota. In February 2010 she was elected a fellow of the American Association for the Advancement of Science. Find out what inspired Ellen Ketterson’s scientific career, what it took to join the ranks of an elite group of scientists, and what Ketterson has learned about the effect of hormones on the migration and mating behaviors of the dark-eyed junco.