Dale Clayton is a Professor of Biology at the University of Utah. He has a master’s degree in entomology from the University of Minnesota and a Ph.D. in evolutionary biology from the University of Chicago. He was a postdoc, then a lecturer at Oxford University (UK) for 5 years before moving to the University of Utah in 1996. Most of his research involves coevolutionary interactions between birds and their parasites from around the world. Since 2008 he and his students have also studied the impact of an invasive species of parasitic fly on Darwin's Finches and other birds in the Galapagos Islands. In addition to publishing 160 journal articles and book chapters, Clayton was lead editor of the book Host-parasite evolution: General principles and avian models, published by Oxford University Press in 1997. He was one of five authors of The chewing lice: World checklist and biological overview, published by the Illinois Natural History Survey in 2003. He is also lead author of the 2015 book Coevolution of life on hosts: Integrating ecology and history, published by the University of Chicago Press. Clayton is a fellow of the American Ornithologists’ Union, past secretary of the Society for the Study of Evolution, and recipient of the H. B. Ward Medal, the American Society of Parasitologists’s highest honor. Clayton is a co-founder of Larada Sciences, Inc d.b.a. Lice Clinics of America.