Daisy Duck Once Upon a Christmas", "Mickey's Twice Upon a Christmas", and "". According to the unofficial timeline of Don Rosa, Daisy was born in 1920. According to Rosa, Daisy is the sister of Donald's brother-in-law – Daisy's brother had married Donald's twin sister, Della Duck, and together, the two became the parents of Huey, Dewey, and Louie Duck. This is his explanation of why the triplets tend to call her "Aunt Daisy" while no such courtesy is given to Gladstone Gander for example. Don Rosa has said that he considers Donald and Daisy to be nonrelated and that Duck simply is
The Oregon Duck logo. Relying on the photo as evidence of Disney's wishes, in 1973, both parties signed a formal agreement granting the university the right to use Donald's likeness as a symbol for (and restricted to) Oregon sports. The agreement gave Disney control over where the mascot could perform and ensured that the performer inside the costume would "properly represent the Donald Duck character." In 2010, Disney and the university reached an agreement that removed the costumed Oregon Duck mascot from its association with the Donald trademark, and allowed The Duck to make more public appearances, such as at college mascot competitions.