Ellen D. Ketterson

Ellen D. Ketterson is distinguished professor of biology and gender studies at Indiana University, Bloomington, a fellow of the American Academy of Arts & Sciences, and president of the American Society of Naturalists. Jonathan W. Atwell is a research scientist and educator at Indiana University, Bloomington; he recently produced an award-winning and widely distributed science film, Ordinary Extraordinary Junco (www.juncoproject.org), which serves as a complement to Snowbird.