As with all duck species, one drake or hen redhead looks ... puzzled me," my friend Dave Ankney said of redhead hens with white head feathers. If it's a mystery to Ankney, it's a sure-enough ...

This unique diving duck has a small body and a relatively large head. The males are colorful and vibrant, with iridescent ...

but with yellowish heads and gray-white feathers along their backs. When you’re done differentiating redhead vs canvasback, ...