Bufflehead (Bucephala albeola)

I spied a bunch of these early in the morning on the Chicago river. They are a really fun looking wintertime visitor. When the males puff up their head feathers their heads look cartoonishly large. Dropped this guy into the sketchbook and realized with all the birds I've drawn so far I haven't really done any waterfowl yet. Gotta change that up since I'm working right along the river these days. I've been spying an awesome assortment of ducks that are a real treat to see.