They are a breed of diving ducks. They have long slender, serated bills that they use to catch fish. Most have crested heads. They are found mainly in the Northern Hemisphere.
Merganser
Auckland Merganser was created in 1841.
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The smallest merganser is called the Hooded Merganser (Lophodytes cucullatus). It is a small North American duck species with striking black and white plumage and a distinctive crest on its head.
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A baby merganser is called a "duckling." Merganser ducklings are known for their distinctive appearance, often having a mix of downy feathers and a sleek shape that helps them swim and dive. They typically stay close to their mother for protection and guidance as they learn to navigate their environment.
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A merganser will eat insects, crustaceans, tadpoles, mollusks, fish, amphibians, and invertebrates it finds when diving under fresh or salt waters.
100 mph by a red-breasted merganser
a merganser. a mallard duck