The king eider (pronounced ) (''Somateria spectabilis'') is a large

sea duck The sea ducks (Mergini) are a tribe of the duck subfamily of birds, the Anatinae. The taxonomy of this group is incomplete. Some authorities separate the group as a subfamily, while others remove some genera. Most species within the group spend ...

that breeds along Northern Hemisphere Arctic coasts of northeast

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

and

Asia Asia ( , ) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land area and 8% of Earth's total surface area. The continent, which ...

. The birds spend most of the year in coastal marine ecosystems at high latitudes, and migrate to

Arctic The Arctic (; . ) is the polar regions of Earth, polar region of Earth that surrounds the North Pole, lying within the Arctic Circle. The Arctic region, from the IERS Reference Meridian travelling east, consists of parts of northern Norway ( ...

tundra In physical geography, a tundra () is a type of biome where tree growth is hindered by frigid temperatures and short growing seasons. There are three regions and associated types of tundra: #Arctic, Arctic, Alpine tundra, Alpine, and #Antarctic ...

to breed in June and July. They lay four to seven eggs in a scrape on the ground lined with grass and down.

Taxonomy and etymology

When he first described the king eider in 1758, in the 10th edition of his opus

Systema Naturae ' (originally in Latin written ' with the Orthographic ligature, ligature æ) is one of the major works of the Sweden, Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the syste ...

Carl Linnaeus Carl Linnaeus (23 May 1707 – 10 January 1778), also known after ennoblement in 1761 as Carl von Linné,#Blunt, Blunt (2004), p. 171. was a Swedish biologist and physician who formalised binomial nomenclature, the modern system of naming o ...

assigned it to the

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

''Anas'', along with the rest of the

duck Duck is the common name for numerous species of waterfowl in the family (biology), family Anatidae. Ducks are generally smaller and shorter-necked than swans and goose, geese, which are members of the same family. Divided among several subfam ...

s. In 1819,

William Elford Leach William Elford Leach (2 February 1791 – 25 August 1836) was an English zoologist and marine biologist. Life and work Elford Leach was born at Hoe Gate, Plymouth, the son of an attorney. At the age of twelve he began a medical apprenticesh ...

moved it and the other large eiders to the genus ''

Somateria The eiders () are large seaducks in the genus ''Somateria''. The three extant species all breed in the cooler latitudes of the Northern Hemisphere. The down feathers of eider ducks and some other ducks and geese are used to fill pillows and q ...

'', where it has remained since. It is very closely related to the other members of its genus, and is known to hybridise with the

common eider The common eider (pronounced ) (''Somateria mollissima''), also called St. Cuthbert's duck or Cuddy's duck, is a large ( in body length) sea-duck that is distributed over the northern coasts of Europe, North America and eastern Siberia. It breed ...

. Despite its very large range, it is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

. The genus name ''Somateria'' is a combination of the

Greek Greek may refer to: Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group *Greek language, a branch of the Indo-European language family **Proto-Greek language, the assumed last common ancestor of all kno ...

words ''sōma'', meaning "body", and ''erion'', meaning "wool"; the combination (i.e. "wooly body") is a reference to the eider's famously thick, soft down. The

specific name Specific name may refer to: * in Database management systems, a system-assigned name that is unique within a particular database In taxonomy, either of these two meanings, each with its own set of rules: * Specific name (botany), the two-part (bino ...

''spectabilis'' is

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

for "showy", "remarkable" or "worth seeing", a reference to the handsomeness of the adult male's

plumage Plumage () is a layer of feathers that covers a bird and the pattern, colour, and arrangement of those feathers. The pattern and colours of plumage differ between species and subspecies and may vary with age classes. Within species, there can b ...

. The bird's

common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often con ...

, king eider, is a direct translation of its Icelandic name. It is called "king" because of the orange, crown-like knob above the male's

bill Bill(s) may refer to: Common meanings * Banknote, paper cash (especially in the United States) * Bill (law), a proposed law put before a legislature * Invoice, commercial document issued by a seller to a buyer * Bill, a bird or animal's beak Pl ...

; the male's multicoloured plumage also suggests royal robes. "Eider" is a Dutch, German or Swedish word derived from the Icelandic word ''æður'' (meaning eider), itself derived from the Old Norse ''æthr''.

Description

The king eider is a large sea duck, measuring in length with a

wingspan The wingspan (or just span) of a bird or an airplane is the distance from one wingtip to the opposite wingtip. For example, the Boeing 777–200 has a wingspan of , and a wandering albatross (''Diomedea exulans'') caught in 1965 had a wingsp ...

of . Males are, on average, heavier than females, with a mean weight of for males and for females. An individual bird's mass can vary considerably from season to season—from as little as to as much as . Like all eiders, the species is

sexually dimorphic Sexual dimorphism is the condition where sexes of the same species exhibit different Morphology (biology), morphological characteristics, including characteristics not directly involved in reproduction. The condition occurs in most dioecy, di ...

; the male is slightly larger and, in breeding

, much more colourful than the female. The male is unmistakable with its mostly black body, buff-tinged white breast and multicoloured head. The head, nape and neck are a pale bluish grey. The cheek is pale green. The bill, separated from the face by a thin black line, is red with a white

nail Nail or Nails may refer to: In biology * Nail (anatomy), toughened protective protein-keratin (known as alpha-keratin, also found in hair) at the end of an animal or human digit, such as fingernail * Nail (beak), a plate of hard horny tissue a ...

and a large, distinctive yellow knob. Some

tertials Flight feathers (''Pennae volatus'') are the long, stiff, asymmetrically shaped, but symmetrically paired pennaceous feathers on the wings or tail of a bird; those on the wings are called remiges (), singular remex (), while those on the tai ...

are curved up and form "spurs" along the back. The female (occasionally colloquially referred to as a "queen eider") is a warm brown colour overall, slightly paler on the head and neck. The

feather Feathers are epidermal growths that form a distinctive outer covering, or plumage, on both avian (bird) and some non-avian dinosaurs and other archosaurs. They are the most complex integumentary structures found in vertebrates and an exa ...

s on her upperparts and flanks are marked with blackish

chevrons Chevron (often relating to V-shaped patterns) may refer to: Science and technology * Chevron (aerospace), sawtooth patterns on some jet engines * Chevron (anatomy), a bone * '' Eulithis testata'', a moth * Chevron (geology), a fold in rock la ...

, while those on her neck and head bear fine black streaks. She has a buffy spot at the base of her bill and a buffy eye ring which extends into a downward curving stripe behind her eye. Her bill is variously described as black or grey, and her legs and feet are greenish grey. Juvenile birds are greyish brown. Late in their first autumn, young males moult into a darker plumage, with white on the breast and rump; it takes them three years to achieve full adult plumage.

Habitat and range

The king eider is circumpolar, found throughout the

. It breeds on the Arctic coast of Alaska, Canada, Greenland,

Svalbard Svalbard ( , ), previously known as Spitsbergen or Spitzbergen, is a Norway, Norwegian archipelago that lies at the convergence of the Arctic Ocean with the Atlantic Ocean. North of continental Europe, mainland Europe, it lies about midway be ...

and Russia, using a variety of

habitats. It winters in arctic and subarctic marine areas, most notably in the Bering Sea, the west coast of Greenland, eastern

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

and northern

Norway Norway, officially the Kingdom of Norway, is a Nordic countries, Nordic country located on the Scandinavian Peninsula in Northern Europe. The remote Arctic island of Jan Mayen and the archipelago of Svalbard also form part of the Kingdom of ...

. Wintering birds can form large flocks on suitable coastal waters, with some flocks exceeding 100,000 birds. It also occurs annually off the northeastern

United States The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 ...

Scotland Scotland is a Countries of the United Kingdom, country that is part of the United Kingdom. It contains nearly one-third of the United Kingdom's land area, consisting of the northern part of the island of Great Britain and more than 790 adjac ...

and

Kamchatka The Kamchatka Peninsula (, ) is a peninsula in the Russian Far East, with an area of about . The Pacific Ocean and the Sea of Okhotsk make up the peninsula's eastern and western coastlines, respectively. Immediately offshore along the Pacific ...

Behaviour

Food and feeding

The king eider's foraging strategies change depending on the season. For much of the year, it is at sea; there, it dives for

benthic The benthic zone is the ecological region at the lowest level of a body of water such as an ocean, lake, or stream, including the sediment surface and some sub-surface layers. The name comes from the Ancient Greek word (), meaning "the depths". ...

invertebrates. During the breeding season, it does more of its foraging on freshwater lakes and ponds, where it dabbles, feeding primarily on small invertebrates plucked from the surface of the water. It feeds on mollusks, crustaceans like king crabs, and on sea urchins, starfish and sea anemones.

Breeding

The female builds a

scrape nest Scrape, scraper or scraping may refer to: Biology and medicine * Abrasion (medical), a type of injury * Scraper (biology), grazer-scraper, a water animal that feeds on stones and other substrates by grazing algae, microorganism and other matter ...

on the ground, usually near water. She lines it with vegetation and

down feather The down of birds is a layer of fine feathers found under the tougher exterior feathers. Very young birds are clad only in down. Powder down is a specialized type of down found only in a few groups of birds. Down is a fine thermal insulator and p ...

s from her own body. She lays a

clutch A clutch is a mechanical device that allows an output shaft to be disconnected from a rotating input shaft. The clutch's input shaft is typically attached to a motor, while the clutch's output shaft is connected to the mechanism that does th ...

of , which she alone incubates for 22 to . The young are raised collectively by the females.

Voice

The male's song is a quavering, dove-like cooing, transcribed as ''croo-croo-croo'' or ''hoo-hoo-hooo''. The female makes a variety of low clucks, grunts and growls.

Longevity

The oldest known king eider was a female that lived at least 18 years 11 months. She was ringed (banded) as an adult south of

Gambell, Alaska Gambell () is a city in the Nome Census Area of the U.S. state of Alaska. Located on St. Lawrence Island, it had a population of 640 at the 2020 census, down from 681 in 2010. History ''Sivuqaq'' is the Yupik language name for St. Law ...

in 1940, and shot in 1958 in

Utqiagvik, Alaska Utqiagvik ( ; , ), formerly known as Barrow ( ), is the borough seat and largest city of the North Slope Borough in the U.S. state of Alaska. Located north of the Arctic Circle, it is one of the northernmost cities and towns in the world and th ...

Conservation and threats

Due to its large population and vast range, the king eider is listed as a species of

least concern A least-concern species is a species that has been evaluated and categorized by the International Union for Conservation of Nature (IUCN) as not being a focus of wildlife conservation because the specific species is still plentiful in the wil ...

by the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN) is an international organization working in the field of nature conservation and sustainable use of natural resources. Founded in 1948, IUCN has become the global authority on the stat ...

. The king eider is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (

AEWA The Agreement on the Conservation of African-Eurasian Migratory Waterbirds, or African-Eurasian Waterbird Agreement (AEWA), is an independent international treaty developed under the auspices of the United Nations Environment Programme's Convent ...

) applies. As eggs and young, king eiders have many predators, including

glaucous gull The glaucous gull (''Larus hyperboreus'') is a large gull, the second-largest gull in the world. The genus name is from Latin , which appears to have referred to a gull or other large seabird. The specific name is Latin for "northern" from the A ...

common raven The common raven or northern raven (''Corvus corax'') is a large all-black passerine bird. It is the most widely distributed of all Corvidae, corvids, found across the Northern Hemisphere. There are 11 accepted subspecies with little variatio ...

parasitic jaeger The parasitic jaeger (North America) or Arctic skua (Europe) (''Stercorarius parasiticus''), is a seabird in the skua family Stercorariidae. It is a migratory species breeding in Northern Scandinavia, Scotland, Iceland, Greenland, Northern Canada ...

and

Arctic fox The Arctic fox (''Vulpes lagopus''), also known as the white fox, polar fox, or snow fox, is a small species of fox native to the Arctic regions of the Northern Hemisphere and common throughout the Tundra#Arctic tundra, Arctic tundra biome. I ...

Traditional uses

The king eider, or ''qengallek'' (pronounced ə.ˈŋaː.ɬək in

Yup'ik The Yupʼik or Yupiaq (sg & pl) and Yupiit or Yupiat (pl), also Central Alaskan Yupʼik, Central Yupʼik, Alaskan Yupʼik ( own name ''Yupʼik'' sg ''Yupiik'' dual ''Yupiit'' pl; Russian: Юпики центральной Аляски), are an ...

, is a regular source of fresh meat in the spring. They begin their migration past the Yukon-Kuskokwim Delta in late April and are hunted in great numbers. In May, several hundred thousand king eiders pass Point Barrow in northern Alaska on their way to Alaskan and Canadian breeding grounds.

Gallery

File:King Eiders.jpg, King eiders (male and female) in natural habitat in

Alaska Alaska ( ) is a non-contiguous U.S. state on the northwest extremity of North America. Part of the Western United States region, it is one of the two non-contiguous U.S. states, alongside Hawaii. Alaska is also considered to be the north ...

wildlife refuge File:Somateria spectabilis (King Eider - Prachteiderente) - Weltvogelpark Walsrode 2012-15.jpg, The conspicuous head of a male File:Somateria spectabilis (King Eider - Prachteiderente) - Weltvogelpark Walsrode 2012-43.jpg, The gait of a king eider at

Weltvogelpark Walsrode Walsrode World Bird Park (), known as Jubs in English until 2010, is a bird park located in the middle of the Lüneburg Heath in North Germany within the municipality of Bomlitz near Walsrode in the state of Lower Saxony, Germany. It is the l ...

(Walsrode Bird Park) File:King Eider RWD.jpg, Female at Alaska Sea Life Center, Seward, Alaska Somateria spectabilis MHNT.ZOO.2010.11.27.3.jpg, ''Somateria spectabilis'' - MHNT

References

Cited works

* * * * * *

Identification and ageing

* * * *

External links

King eider text, map and photographs
a
Oiseaux.net
* * * * * * {{Authority control

king eider The king eider (pronounced ) (''Somateria spectabilis'') is a large Merginae, sea duck that breeds along Northern Hemisphere Arctic coasts of northeast Europe, North America and Palearctic, Asia. The birds spend most of the year in coastal marine ...

Birds of the Arctic

Extant Pleistocene first appearances Holarctic birds