Ruth E. Shea has studied the ecology and management of Trumpeter Swans of the Yellowstone region since the 1970's and is now Greater Yellowstone Coordinator for The Trumpeter Swan Society. Dr. Edward O. Garton, Emeritus Professor of Fish and Wildlife Ecology and Statistics, U. of Idaho, Moscow retired in 2011 and continues his work in population ecology, wildlife statistics, and population viability assessments of rare and endangered species. With Ruth Shea, he is presently working to analyze the ecology, management and current status of the swans of the Yellowstone region and the changes that have occurred since 1986. Dr. Joe Ball retired in 2004 as Unit Leader of the Montana Cooperative Wildlife Research Unit, Missoula.