July 1, 2022

The ducks (Anatidae, from the Latin anas "duck" and the Greek ἰδ-id- "aspect") are a family of birds in the order Anseriformes. Ducks are usually migratory birds that usually live near water; one of their adaptations to the aquatic environment makes them web-footed. Among the very diverse species of this family (approximately one hundred and fifty species) are the mallards or ducks; the geese, geese or goose; the yaguasas, the swans, the serretas, the eiders, the barnaclas, the cauquenes, the pochards and the jars. In modern times, its natural distribution covers practically the entire planet Earth, with the exception (with occasional cases) of Antarctica.


Previously divided into six subfamilies, recent anatomical studies by Livezey (1986)[1] showed that the family Anatidae is divided into nine subfamilies, listed below. In this classification, that of Madge & Burn has been followed.[citation needed]

Anatinae: typical ducks

It comprises between eleven and eighteen genera, with more than seventy living species. They are the ducks proper; Confusing this subfamily with the entire family Anatidae should be avoided. The subfamily Anatinae contains three groups of ducks: the worldwide group of surface ducks, which includes 8 genera and approximately 55 living species; the group of diving ducks, with worldwide distribution, consisting of 16 species, in 3 genera; and the moa-nalo group, comprising three known genera and four known species, all extinct. Aix (2 species) Amazonetta (monotypic; Amazonetta brasiliensis, Brazilian duck) Annas (39 species) Asarcornis Aythya (porrones: 12 species) Cairina Callonetta (monotypic; Callonetta leucophrys, collared duck) Chenonetta (monotypic; Chenonetta jubata, maned duck) Lophonetta Malacorhynchus (one extinct species; and one living species: Malacorhynchus membranaceus, pachón duck) Marmaronetta (monotypic; Marmaronetta angustirostris, marbled teal) Netta (3 living species) Nettapus pteronetta Rhodesian † Salvadorian Speculanas

Anserinae: swans and geese

It comprises five to seven genera, with twenty-seven living species, only in warm or temperate regions of the northern hemisphere, and some species in the southern hemisphere, with two or three genera of swans and barnacles, and four genera of geese (in some cases three). genres, according to authors). Anser (geese; 8 species) Branta (geese; 8 living species) Cereopsis (monotypic; Cereopsis novaehollandiae, gray goose; some include it in Tadorninae)[citation needed] Chen (white geese; 3 species) Cnemiornis † (New Zealand Geese; 2 extinct species) Coscoroba (monotypic; Coscoroba coscoroba, coscoroba swan) Cygnus (swans; 7 species)

Dendrocygninae: whistling ducks, suirirís or yaguasas

It comprises a single genus, with eight species. Dendrocygna.

Merginae: merganser and allies

It comprises ten genera, with twenty species. Most, but not all, species are essentially marine outside of the breeding season. Bucephala (pochards; 3 living species) Camptorhynchus † Clangula Histrionicus (monotypic; Histrionicus histrionicus, harlequin duck) Lophodytes (monotypic; Lophodytes cucullatus, crested duck) Melanita Mergellus (monotypic; Mergellus albellus, Little Merganser) Mergus (merganser; 4 living species) Polysticta Somateria (eiders; 3 species)

Oxyurinae: Diving Ducks or Stiff-tailed Ducks

It comprises four genera, three of them monotypic, with a total of eight living species. Biziura (monotypic; Biziura lobata, musk duck) Heteronetta (monotypic; Heteronetta atricapilla, black-headed duck) Nomonyx (monotypic; Nomonyx dominicus, masked duck) Oxyura (5 species)


It comprises a single genus, with