June 9 is Donald Duck's birthday. NPR's Ayesha Rascoe speaks with film historian J.B. Kaufman about how the Disney character has changed since his debut 90 years ago.

In Ducktales (2017), Della Duck is a female character, and one of the stars of the show. Relatable experiences have been an important narrative device for Donald Duck over the past 90 years.

Donald Duck was created by Walt Disney when he heard Clarence Nash doing his duck voice in 1934. In 2002, Donald Duck was listed by TV Guide as one of the 50 greatest cartoon characters of all time.