Gerta is a female anthropomorphic duck.
Gerta is an aunt of Huey, Dewey, and Louie, though precisely how she is related to the Duck family is unclear. She lives with her husband Sven Duck in Lapland, in a small town where they are the town bakers. Huey, Dewey, and Louie visited Gerta and Sven in Sweden in 1992 and led to their acquiring the friendly (albeit elderly) reindeer White Horn for a pet.
Behind the scenes
Gerta first appeared in the book Lapland Friends: An Adventure in Sweden.