Anseriformes

order of birds Anseriformes (Anseriformes) is an order comprising closely related families of organisms. It contains 3 families with 156 known species. This includes the family groups Anatidae, Anhimidae, and Anseranatidae. Among its members, 25 species are currently classified as threatened (Critically Endangered, Endangered, or Vulnerable). It belongs to Birds (Aves).