Anseriformes
The waterfowl group includes 3 families and 161 species found worldwide. The largest family in this group, the ducks, geese, and swans , makes up 157 if these species. These are all medium to large water birds that eat a variety of things, including vegetation, fish, and invertebrates. They use their webbed feet to paddle about in the water. Most species are social and many are migratory. Ducks, geese, and swans are widely recognizable, as humans hunt them widely and have domesticated both ducks and geese.