Because of the low body density needed for flight, I suspect that all flighted birds can swim to one degree or another. It is at least trivial for them to floa

Because of the low body density needed for flight, I suspect that all flighted birds can swim to one degree or another. It is at least trivial for them to float quite high in the water. And once you're doing that, you've got both legs and wings that should be able to provide some manner of propulsion.