The “Old Sailor” was a man of unknown species.
Description[]
As later recounted by Yellow Beak to Donald Duck and his nepehws, a younger Yellow Beak once saved the life of an old sailor in a fight in Singapore. In gratitude, the old man told Yellow Beak the secret location of the map to Morgan's Island (namely hidden inside the fireplace of the Bucket o'Blood Inn), which he had learned from the ghost of Henry Morgan himself and was now too old to seek out for himself.
Behind the scenes[]
The Old Sailor is mentioned in the 1942 story Donald Duck Finds Pirate Gold.