C. Stuart Houston, a physician who also made major contributions in two other disciplines, ornithology and Canadian history, died July 22, 2021 in Saskatchewan, Canada, at the age of 94. He joined the American Ornithologists’ Union (AOU) in 1943 and was an Elective Member (1959), Fellow (1989), and Life Member of the society. He also served for over 20 years as the In Memoriam Editor of The Auk. He received the Marion Jenkinson Service Award from the AOU in 2004.