The Jayhawk took on a more serious expression with the school's second logo. Debuted in 1920, this was the first time the "KU" monogram was incorporated into the mascot. The monogram remains an important part of the Jayhawk logo to this day. In use for less than three years, this logo had the shortest tenure of all the Jayhawk logos. Some refer to this Jayhawk as Chunky Jay. Unique Characteristics of this Logo: Debuts the KU monogram, which is featured the most prominently on this logo; The 1920 Jayhawk is the only one who doesn't wear shoes.