Aaron is a research scientist in the School of Natural Resources and the Environment at the University of Arizona and is an active member of the research community on Tumamoc Hill. He studies the distribution, abundance, and demographics of wildlife populations, and focuses on research questions relevant to conservation and management. He has worked in southwestern North America since 1996, and with wildlife and plant communities in northwest Mexico since 2000. Aaron is passionate about fieldwork, ecology, and landscape exploration, and he is committed to producing science that has both theoretical and applied value. Some of his recent projects have focused on the ecology of pygmy owls and elf owls in the Sonoran desert, the distribution, abundance, habitat relationships, and biogeography of breeding birds in the Sky Islands and Sierra Madre Occidental in Mexico, and spatiotemporal dynamics of small vertebrate populations in the Sonoran desert. Aaron earned a B.A. from Prescott College, a M.S. in Wildlife Ecology from the University of Arizona, and a Ph.D. in Organismal Biology and Ecology from the University of Montana.