カオジロオタテガモ Oxyura leucocephala

Remarkable odd-looking diving duck with a long tail, often held cocked. Males have a striking white face and black crown that contrasts with their large blue bill and chestnut body. Female and juveniles have a darker brown bill, more extensive dark crown and pale cheek stripe, similar to Ruddy Ducks. Silent and rarely flies. Rare and local. Usually found in shallow, open water with dense aquatic plants.