The eye shape does not indicate his species. Many ducks share the same characteristic.
And Barks (and later Rosa) drew Flintheart with the same kind of pointed beak, so that doesn't indicate species either. Gladstone being called "the luckiest duck in the world" seems to seal the deal of his being a "duck" in my mind (although I would argue that, just as Scrooge should be called the richest manin the world, not the richest duck, so too should Gladstone be called the luckiest man in the world ... these characters are not ducks, they're people! Duck is a proper name in my headcanon, not a species). "Gander" is just a name, not a species.
The eye shape does not indicate his species. Many ducks share the same characteristic.
And Barks (and later Rosa) drew Flintheart with the same kind of pointed beak, so that doesn't indicate species either. Gladstone being called "the luckiest duck in the world" seems to seal the deal of his being a "duck" in my mind (although I would argue that, just as Scrooge should be called the richest manin the world, not the richest duck, so too should Gladstone be called the luckiest man in the world ... these characters are not ducks, they're people! Duck is a proper name in my headcanon, not a species). "Gander" is just a name, not a species.
Hey, how do we know Glomgold isn't a Goose/Duck hybrid like Gladstone, who identifies as a duck because his favourite parent (his mother) was a duck?
And Barks (and later Rosa) drew Flintheart with the same kind of pointed beak, so that doesn't indicate species either. Gladstone being called "the luckiest duck in the world" seems to seal the deal of his being a "duck" in my mind (although I would argue that, just as Scrooge should be called the richest manin the world, not the richest duck, so too should Gladstone be called the luckiest man in the world ... these characters are not ducks, they're people! Duck is a proper name in my headcanon, not a species). "Gander" is just a name, not a species.
Hey, how do we know Glomgold isn't a Goose/Duck hybrid like Gladstone, who identifies as a duck because his favourite parent (his mother) was a duck?