The Oregon marching band took the field at halftime to play a song from the "Barbie" movie, "I'm just Ken." in formation on Rich Brooks Field in the outline of a duck.
To make the message clear, the scoreboard displayed, "Just the Duck."
As KOIN reporter Ally Osborne points out, this proves definitively that the Oregon mascot is "The Duck," not "Puddles," the bastardized nickname used by casuals.
Puddles was a live Duck mascot led by a leash during the '30s and '40s. The Duck has always been The Duck. It's his X handle, the title on his Instagram Page, A handshake agreement with Disney made it official in 1947.