Somateria

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Pangalloanserae
Cladus: Galloanseres
Ordo: Anseriformes

Familia: Anatidae
Subfamilia: Merginae
Genus: Somateria
Species:
S. fischeri - S. mollissima - S. spectabilisName

Somateria Leach, 1819

Typus: Anas spectabilis Linnaeus, 1758 = Somateria spectabilis

References

Voy.disc.[Ross]App.2 p. 48

Vernacular names
беларуская: Гагі
Deutsch: Eiderenten
English: Eiders
suomi: Haahkat
français: Eiders
íslenska: Eðarfuglar
日本語: ケワタガモ属
svenska: Ejdrar

Eiders (/ˈaɪ.dər/) are large seaducks in the genus Somateria. The three extant species all breed in the cooler latitudes of the Northern Hemisphere.[2]

The down feathers of eider ducks, and some other ducks and geese, are used to fill pillows and quilts—they have given the name to the type of quilt known as an eiderdown.[3]

Taxonomy

The genus Somateria was introduced in 1819 to accommodate the king eider by the English zoologist William Leach in an appendix to John Ross's account of his voyage to look for the Northwest Passage.[4][5] The name is derived from Ancient Greek σῶμα : sōma "body" (stem somat-) and ἔριον : erion "wool", referring to eiderdown.[6]

Steller's eider (Polysticta stelleri) is in a different genus despite its name.[7]
Species

The genus contains three species.[7]

Image	Scientific name	Common Name	Distribution
	S. mollissima	Common eider	northern coasts of Europe, North America and eastern Siberia
	S. spectabilis	King eider	northeast Europe, North America and Asia
	S. fischeri	Spectacled eider	coasts of Alaska and northeastern Siberia.

Two undescribed species are known from fossils, one from Middle Oligocene rocks in Kazakhstan and another from the Late Miocene or Early Pliocene of Lee Creek Mine, United States. The former may not actually belong in this genus.
References

Jarocki, F.P. (1819). Spis ptaków w gabinecie zoologicznym Królewsko Warszawskiego Uniwersytetu znayduiących się, a podług naynowszego systemu ustawionych (in Polish). Warszawa: nakł. i drukiem Zawadzkiego i Węckiego Uprzywilejowanych Drukarzy i Księgarzy Dworu Królestwa. p. 62.
Kaufman, Kenn (2001). Lives of North American Birds. New York, New York: Houghton Mifflin Harcourt. p. 96. ISBN 0-395-77017-3.
"BBC Radio 4 - Tweet of the Day, Eider". Bbc.co.uk. 9 July 2015. Retrieved 9 July 2015.
Leach, William Elford (1819). Ross, John (ed.). A Voyage of Discovery made under the orders of the Admiralty in her Majesty's ships Isabella and Alexander, for the purpose of exploring Baffin's Bay, and enquiring into the probability of a North-West passage. London: John Murray. Appendix II, p. 48.
Mayr, Ernst; Cottrell, G. William, eds. (1979). Check-List of Birds of the World. Vol. 1 (2nd ed.). Cambridge, Massachusetts: Museum of Comparative Zoology. p. 487.
Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 359. ISBN 978-1-4081-2501-4.
Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (July 2021). "Screamers, ducks, geese & swans". IOC World Bird List Version 11.2. International Ornithologists' Union. Retrieved 30 November 2021.