Editing Common merganser (section)

===Feeding===
As with other Mergansers, these piscivorous ducks have serrated edges to their bills to help them grip their prey, so they are often known as "sawbills". In addition to fish, they take a wide range of other aquatic prey, such as [[mollusc]]s, [[crustacean]]s, worms, insect larvae, and amphibians; more rarely, small mammals and birds may be taken.<ref name=Hoyo/><ref name=Madge/> As in other birds with this trait, the salmon-pink colouration shown variably by males is probably dietary-derived from the [[carotenoid]] pigments found in some crustaceans and fish.<ref name=Hudon1990/> When not diving for food, they are usually observed swimming on the surface of the water or resting on rocks in the middle of rivers or hidden in the vegetation along riverbanks, or (in winter) on the edge of floating ice.<ref name=Hoyo/><ref name=Madge/>