Big Jay is one of the costume mascots of the Kansas Jayhawks. Together, he and Baby Jay are Jayhawks and are the mascots used by the University of Kansas. Another mascot named Centennial Jay was temporarily used in 2012.
The original mascot for the Kansas Jayhawks was a bulldog. In 1912, the Jayhawk was first seen in a cartoon by Henry Maloy in The University Daily Kansan.
In November 1958, the Jayhawk became the official mascot for Kansas University. The "Jayhawk" idea came from the combination of a blue jay and a sparrow hawk.