FOR THE BIRDS: Only birds have feathers and every bird has them. Feathers are a natural engineering marvel that provide many functions like insulation from the heat and cold, displaying for courtship, and most impressively, lift and drag for flight. Take a closer look at bird feathers. And learn more fun facts about birds in our field guide https://nature.mdc.mo.gov/discover-nature/general-species-information/bird-facts -- Peg@MDC | Missouri Dept. of Conservation