What is another word for fish duck?
Pronunciation: [fˈɪʃ dˈʌk] (IPA) 
The term "fish duck" can be used to describe a variety of water birds that are primarily known for their unique ability to dive and catch fish underwater. Some synonyms for the term include merganser, cormorant, loon, grebe, and osprey. Mergansers are a type of diving duck that have serrated bills, which help them grip their slippery prey. Cormorants are a dark-feathered bird with long necks and hooked bills that can also dive deep for their food. Loons are large, long-necked birds with striking black and white markings that are often found in North American lakes. Grebes are small, duck-like birds with a distinctive flat head and an affinity for both fish and invertebrates. Ospreys are a large, fish-eating bird of prey that can sometimes be spotted hovering over bodies of water before diving down to catch their next meal.
