served as chairman and president of many professional entomological organizations and committees, including the Entomological Society of America, and participated in international conferences. He was noted for his work on classification, phylogeny and natural history of hydradephaga. He spent countless hours in the UW-Madison Arboretum, where he launched a lifelong birding avocation working for an Eagle Scout merit badge. His love of birding let him to become the editor of the Christmas Bird Counts for the Wisconsin Society of Ornithology's publication the Passenger Pigeon for 35 years, and received the WSO Silver Passenger Pigeon Award in 1978, Certificate of Appreciation in 1989, and the Sam Robbins Lifetime Appreciation award in 2002. He served on the Board of Directors, as Program Chairman and also President of the Madison Audubon Society, where he also organized the Madison Christmas Bird Counts. He enjoyed his service as a member of the Kiwanis Club of Madison-West. Since his retirement, Bill and Jane enjoyed spending winters at their home in Green Valley, where they enjoyed many happy hours birding and hiking in the scenic canyons and cienegas of Southern Arizona. Bill is survived by his loving wife, Jane; and two daughters, Leslie and Linda (husband Steve Sylvester); one son, Ron (wife Connie Hilsenhoff); his sister Barbara Ramsay (husband John Ramsay); sister-in-law Mary Sylvan; two grandchildren and many nieces and nephews. He was preceded in death by his mother and father, mother and father-in-law (Margaret and Victor Sylvan), and brother-in-law (Ronald Sylvan). We love him and will miss him. There will be a family service Wednesday, June 22, and a celebration of his life at Blackhawk Country Club on Friday, July 1 at 11 am for family and friends. Memorial donations may be made to the UW Arboretum, Madison Audubon Society, Madison West Kiwanis Club, or Wisconsin Society for Ornithology.