This is how the Scrooge McDuck costumes have changed over the years in the parks. It is noted that most Scrooges have headfeathers, and some do not.
1983 - 1992:
Scrooge has shorter circle eyes, a slightly closed beak, a shorter gray top hat, a red coat and a black belt. The mask would be used for the walkaround version of Ludwig von Drake
1987 - 1996:
Scrooge is now in his DuckTales outfit.
1996 - present: Scrooge almost resembles his animated version.