Duck: as commonly called is a family of several species in their family including Swans, Teal, Pochards, Geese/Goose etc. Ducks are medium sized aquatic birds, except Swans and Geese who are relatively bigger in size. All may be found in fresh water and sometimes in sea water as well.
Names in this category as a family [ Duck, Gadwall, Garganey, Goldeneye, Goose, Grebe, Mallard, Merganser, Pintail, Pochard, Shoveler, Swan, Teal and Wigeon ]
Ducks feed on variety of food sources such as aquatic plants, fish, water insects, small frogs, small amphibians etc. Their feet is designed to swim and feathers to resist wetting, their flat beaks helps them in mud probing and weeding jobs. All can fly long distances and infact Bar headed Goose are among high altitude flyers.
Most are migratory except for few such as Spot billed Duck and Whistling Duck; they migrate in both seasons and travel long distances.
Goose, Grebe, Mallard, Pochard, Shovler, Swan, Teal etc
List Ducks and similar in India