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What was the SIZE of the Black Duck-like bird you saw in Yucatan?



Lesser Scaup: Medium-sized diving duck has finely barred gray back and gray-washed white underparts. Head, neck and breast are black with purple gloss. It has yellow eyes, blue-gray bill, black tail and black wings with white patches. Females are chocolate brown with lighter sides, red-brown head and white patch at base of dark gray bill. Feeds on crustaceans, mollusks, small fish, seeds and vegetative plants. Swift direct flight with rapid wing beats.
Bufflehead: This small diving duck is mostly white with a glossy green-black to purple-black head and back. The head has a large white patch behind eye. The wings are dark with white patches visible in flight. It feeds on aquatic plant seeds, and insects, larvae and snails. It has a swift direct flight with rapid wing beats.
 
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