The Hooded Merganser is a very small diving duck and the sexes are distinctly different in their appearance. The Male Hooded Merganser has a black head with a large white patch and yellow eyes. The Female Hooded Merganser is a tawny cinnamon color. This Female is preening in evening light on a pond in Florida. The Hooded Merganser has a collapsible crest that can make their head very different shapes depending on the position of the crest. They dive for small fish and insects.