UC Davis animal behaviorist Peter Marler, this year's recipient of the top campus research award, will give the 1995 Faculty Research Lecture at 8 p.m. Tuesday, April 18, in Room 3 of Kleiber Hall. The talk is titled "From the Heart or the Head? Reflections on the Sounds of Animals." Marler, professor emeritus of biology and psychology, has been called "the dominant intellectual leader in the study of animal communication" and "the pre-eminent scientist in the field of animal behavior," says Thomas W. Schoener, professor and chair of the award selection committee. "In the words of a colleague, he 'single-handedly has steered the field of animal communication during the last 40 years, trailblazing at every turn.'" Marler has spent nearly four decades studying how animals, mostly birds and primates, communicate and how their methods of communication develop. For example, his landmark work with songbirds has led to a radically new view of the relationship of learning and instinct, once thought to be diametrically opposed. Now it is generally accepted that learning, as it occurs in nature, is typically driven by instinctual influences, a finding important to such disparate fields as linguistics, child development, speech and hearing.