Like many divers, bluebill ducks are generally quiet. However, the drakes of both subspecies make what might be best described as a brief low whistle during late winter and spring courtship.

How to Drop a Blitzing Bluebill One look at a bluebill tells you it’s built for speed: streamlined to cut through air and water. Skimming the waves, it looks even faster. There is no easy way to ...