Officially, a mallard is a dabbling duck, which is a duck that feeds or "dabbles" at the surface of the water, not diving. A simpler answer would be to call it a swimming bird.
A Cockatoo can live between 40 and 60 years old, and there are reports of them living as long as 75 to 80 year old, but they are not confirmed. While a Macaw will live on average to be 60 to 70 years...