Negreta Alas Blancas de Stejneger Melanitta stejnegeri

Large scoter with distinctive white patch on wing. Males are black and have small white mark under eye, dark knob on the bill, and red-and-orange bill tip. Females are dark chocolate-brown and have two rounded white patches on face. Extremely similar to White-winged Scoter: note male’s much more angular head structure with steeper and more prominent protuberance and different bill coloration. Female is much more difficult to identify, but has more swollen-looking protuberance. Breeds in Russian tundra and taiga pools and lakes, winters on the coast; only very occasionally reported inland in the winter.