A third-generation farmer, Ken operates Birker Inc., with his wife, Sue, his brother and their families. In addition to milking 350 Holsteins and crossbreds for Vinbana Dairy, the dairy branch of the operation, the Birkers have a 160-cow beef herd and farm 3,000 acres of corn, soybeans, alfalfa and cover crops. Ken is active in the industry, serving as chairman of the Iowa Dairy Nutrition Advisory Council and as a member of the Dairy Iowa committee and the Iowa State Dairy Association board. Previously, he served as chairman of Mid-America Dairymen Young Cooperators, chairman of his local supply cooperative and was an FFA instructor. He has also been named an Honorary Chapter Farmer by FFA.