Smew

Last updated

Smew
Zwergsaeger maenchen weibchen.jpg
Male (top) and female smew
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Anseriformes
Family: Anatidae
Genus: Mergellus
Species:
M. albellus
Binomial name
Mergellus albellus
MergellusAlbellusIUCNver2018 2.png
Range of M. albellus
  Breeding
  Non-breeding
  Passage
Synonyms
  • Mergus albellusLinnaeus, 1758
  • Mergus minutusLinnaeus, 1758

The smew (Mergellus albellus) is a species of duck and is the only living member of the genus Mergellus. Mergellus is a diminutive of Mergus and albellus is from Latin albus "white". [2] This genus is closely related to Mergus and is sometimes included in it, though it might be closer to the goldeneyes (Bucephala). [3] The smew has hybridized with the common goldeneye (B. clangula). [4]

Contents

A seaduck fossil from the Middle Miocene shows that birds similar to smew existed up to 13  million years ago. The extant species dates back to the Late Pleistocene.

Name

The term smew has been used since the 17th century and is of uncertain origin. It is believed to be related to the Dutch smient ("wigeon") and the German Schmeiente or Schmünte, "wild duck." [5] It is probably derived from smee, a dialectal term for a wild duck. [6] [7]

Description

Mergellus albellus female (closeup view). Spinus-smew-2014-11-n019832-w.jpg
Mergellus albellus female (closeup view).

The drake smew, with its 'cracked ice' or 'panda' appearance, is unmistakable, and looks very black-and-white in flight. The females and immature males are grey birds with chestnut foreheads and crowns, and can be confused at a distance with the ruddy duck; they are often known as "redhead" smew. It has oval white wing-patches in flight. The smew's bill has a hooked tip and serrated edges, which help it catch fish when it dives for them.

The smew is 38–44 cm (15–17 in) long, [4] with a wingspan of 56–69 cm, and a weight 450–650 g. [8]

Distribution and ecology

Smew taking off MergellusAlbellusTakeOffv3.jpg
Smew taking off

This species breeds in the northern taiga of Europe and the Palearctic. It needs trees for breeding. The smew lives on fish-rich lakes and slow rivers. As a migrant, it leaves its breeding areas and winters on sheltered coasts or inland lakes of the Baltic Sea, the Black Sea, northern Germany and the Low Countries, with a small number reaching Great Britain (for example, at Dungeness), mostly at regular sites. Vagrants have been recorded in North America. On lakes it prefers areas around the edges, often under small trees. The smew breeds in May and lays 7–11 cream-colored eggs, incubated by the female for 26–28 days. Ducklings leave the nest soon after hatching and learn to fly within about 10 weeks. [8]

It nests in tree holes, such as old woodpecker nests. It is a shy bird and flushes easily when disturbed.

The smew is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies. It is not considered threatened on the IUCN Red List, though its population is decreasing. [1]

Fossil history

An unnamed fossil seaduck, known from a humerus found in the Middle Miocene Sajóvölgyi Formation (Late Badenian, 13–12 million years ago) of Mátraszõlõs, Hungary, was assigned to Mergus. However, the authors included the smew therein, and consequently, the bone is more properly assigned to Mergellus—especially as it was more similar to a smew's than to the Bucephala remains also found at the site. It is sometimes argued [9] that the Mátraszõlõs fossil is too old to represent any of the modern seaduck genera, but apparently these were all well-distinct even back then. [10]

Subfossils from this species was also found in England indicate that the living species' range extended there a few thousand years ago. [9]

Related Research Articles

<span class="mw-page-title-main">Labrador duck</span> Extinct species of bird

The Labrador duck was a North American bird; it has the distinction of being the first known endemic North American bird species to become extinct after the Columbian Exchange, with the last known sighting occurring in 1878 in Elmira, New York. It was already a rare duck before European settlers arrived, and as a result of its rarity, information on the Labrador duck is not abundant, although some, such as its habitat, characteristics, dietary habits and reasons behind its extinction, are known. There are 55 specimens of the Labrador duck preserved in museum collections worldwide.

<span class="mw-page-title-main">Charadriiformes</span> Order of birds

Charadriiformes is a diverse order of small to medium-large birds. It includes about 390 species and has members in all parts of the world. Most charadriiform birds live near water and eat invertebrates or other small animals; however, some are pelagic (seabirds), others frequent deserts, and a few are found in dense forest. Members of this group can also collectively be referred to as shorebirds.

<span class="mw-page-title-main">Loon</span> Family of birds

Loons or divers are a group of aquatic birds found in much of North America and northern Eurasia. All living species of loons are members of the genus Gavia, family Gaviidae and order Gaviiformes.

<span class="mw-page-title-main">Darter</span> Family of birds

The darters, anhingas, or snakebirds are mainly tropical waterbirds in the family Anhingidae, which contains a single genus, Anhinga. There are four living species, three of which are very common and widespread while the fourth is rarer and classified as near-threatened by the IUCN. The term snakebird is usually used without any additions to signify whichever of the completely allopatric species occurs in any one region. It refers to their long thin neck, which has a snake-like appearance when they swim with their bodies submerged, or when mated pairs twist it during their bonding displays. "Darter" is used with a geographical term when referring to particular species. It alludes to their manner of procuring food, as they impale fishes with their thin, pointed beak. The American darter is more commonly known as the anhinga. It is sometimes called "water turkey" in the southern United States; though the anhinga is quite unrelated to the wild turkey, they are both large, blackish birds with long tails that are sometimes hunted for food.

<span class="mw-page-title-main">Anatidae</span> Biological family of water birds

The Anatidae are the biological family of water birds that includes ducks, geese, and swans. The family has a cosmopolitan distribution, occurring on all the world's continents except Antarctica. These birds are adapted for swimming, floating on the water surface, and in some cases diving in at least shallow water. The family contains around 174 species in 43 genera.

<span class="mw-page-title-main">Anseriformes</span> Order of water birds

Anseriformes is an order of birds also known as waterfowl that comprises about 180 living species of birds in three families: Anhimidae, Anseranatidae, and Anatidae, the largest family, which includes over 170 species of waterfowl, among them the ducks, geese, and swans. Most modern species in the order are highly adapted for an aquatic existence at the water surface. With the exception of screamers, males have penises, a trait that has been lost in the Neoaves. Due to their aquatic nature, most species are web-footed.

<span class="mw-page-title-main">Mergini</span> Tribe of birds

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 their winters near coastal waters. Many species have developed specialized salt glands to allow them to tolerate salt water, but these are poorly developed in juveniles. Some of the species prefer riverine habitats. All but two of the 22 species in this group live in far northern latitudes.

<span class="mw-page-title-main">Anatinae</span> Subfamily of birds

The Anatinae are a subfamily of the family Anatidae. Its surviving members are the dabbling ducks, which feed mainly at the surface rather than by diving. The other members of the Anatinae are the extinct moa-nalo, a young but highly apomorphic lineage derived from the dabbling ducks.

<span class="mw-page-title-main">Long-tailed duck</span> Species of bird

The long-tailed duck, formerly known as oldsquaw, is a medium-sized sea duck that breeds in the tundra and taiga regions of the arctic and winters along the northern coastlines of the Atlantic and Pacific Oceans. It is the only member of the genus Clangula.

<i>Mergus</i> Genus of birds

Mergus is the genus of the typical mergansersmur-GAN-sərz, fish-eating ducks in the subfamily Anatinae. The genus name is a Latin word used by Pliny the Elder and other Roman authors to refer to an unspecified waterbird.

<span class="mw-page-title-main">Common goldeneye</span> Species of bird

The common goldeneye or simply goldeneye is a medium-sized sea duck of the genus Bucephala, the goldeneyes. Its closest relative is the similar Barrow's goldeneye. The genus name is derived from the Ancient Greek boukephalos, a reference to the bulbous head shape of the bufflehead. The species name is derived from the Latin clangere.

<span class="mw-page-title-main">Barrow's goldeneye</span> Species of bird

Barrow's goldeneye is a medium-sized sea duck of the genus Bucephala, the goldeneyes. This bird was named after Sir John Barrow. The genus name is derived from Ancient Greek boukephalos, "bullheaded", from bous, "bull " and kephale, "head", a reference to the bulbous head shape of the bufflehead. The species name islandica means Iceland.

<span class="mw-page-title-main">Bufflehead</span> Species of bird

The bufflehead is a small sea duck of the genus Bucephala, the goldeneyes. This species was first described by Carl Linnaeus in his landmark 1758 10th edition of Systema Naturae as Anas albeola.

<span class="mw-page-title-main">Magpie goose</span> Species of bird

The magpie goose is the sole living representative species of the family Anseranatidae. This common waterbird is found in northern Australia and southern New Guinea. As the species is prone to wandering, especially when not breeding, it is sometimes recorded outside its core range. The species was once also widespread in southern Australia but disappeared from there largely due to the drainage of the wetlands where the birds once bred. Due to their importance to Aboriginal people as a seasonal food source, as subjects of recreational hunting, and as a tourist attraction, their expansive and stable presence in northern Australia has been "ensured [by] protective management".

<span class="mw-page-title-main">Knob-billed duck</span> Species of bird

The knob-billed duck, or African comb duck, is a duck found in tropical wetlands in Sub-Saharan Africa, Madagascar and the Indian Subcontinent from northern India to Laos and extreme southern China.

<i>Mergellus</i> Genus of duck

Mergellus is a genus of duck. The smew (Mergellus albellus) is the only living species, but an extinct species known as Mergellus mochanovi has also been described from Late Pleistocene deposits in the Yakutia region of Russia.

<span class="mw-page-title-main">Fulvous whistling duck</span> Species of bird in the family Anatidae, widespread in tropical wetlands

The fulvous whistling duck or fulvous tree duck is a species of whistling duck that breeds across the world's tropical regions in much of Mexico and South America, the West Indies, the southern United States, sub-Saharan Africa and the Indian subcontinent. It has plumage that is mainly reddish brown, long legs and a long grey bill, and shows a distinctive white band across its black tail in flight. Like other members of its ancient lineage, it has a whistling call which is given in flight or on the ground. Its preferred habitat consists of wetlands with plentiful vegetation, including shallow lakes and paddy fields. The nest, built from plant material and unlined, is placed among dense vegetation or in a tree hole. The typical clutch is around ten whitish eggs. The breeding adults, which pair for life, take turns to incubate, and the eggs hatch in 24–29 days. The downy grey ducklings leave the nest within a day or so of hatching, but the parents continue to protect them until they fledge around nine weeks later.

<span class="mw-page-title-main">Scaly-sided merganser</span> Species of bird

The scaly-sided merganser or Chinese merganser is an endangered typical merganser. It lives in Manchuria and extreme Southeast Siberia, breeding in the north and wintering in the south.

<i>Puffinus</i> Genus of birds

Puffinus is a genus of seabirds in the order Procellariiformes that contains about 20 small to medium-sized shearwaters. Two other shearwater genera are named: Calonectris, which comprises three or four large shearwaters, and Ardenna with another seven species.

<span class="mw-page-title-main">Goldeneye (duck)</span> Genus of birds

Bucephala is a genus of diving ducks found in the Northern Hemisphere.

References

  1. 1 2 BirdLife International (2016). "Mergellus albellus". IUCN Red List of Threatened Species . 2016: e.T22680465A85991357. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22680465A85991357.en . Retrieved 12 November 2021.
  2. Jobling, James A (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. pp.  38, 251. ISBN   978-1-4081-2501-4.
  3. Livezey, Bradley C. (1986). "A phylogenetic analysis of recent anseriform genera using morphological characters" (PDF). Auk . 103 (4): 737–754. doi:10.1093/auk/103.4.737. JSTOR   4088089.
  4. 1 2 Madge, Steve; Burn, Hilary (1988). Waterfowl: An Identification Guide to the Ducks, Geese, and Swans of the World . Boston: Houghton Mifflin. pp.  274–276. ISBN   0-395-46727-6.
  5. "smew - Definition of smew in English by Oxford Dictionaries". Oxford Dictionaries - English. Archived from the original on December 29, 2018.
  6. "What is smee duck". findwords.info.
  7. "Smee definition and meaning - Collins English Dictionary". www.collinsdictionary.com.
  8. 1 2 "Smew, Mergellus albellus - Birds - NatureGate". www.luontoportti.com. Retrieved 2020-09-25.
  9. 1 2 Mlíkovský, Jiří (2002). Cenozoic Birds of the World, Part 1: Europe (PDF). Prague: Ninox Press. p. 123. ISBN   80-901105-3-8 . Archived from the original (PDF) on 11 April 2016.
  10. Gál, Erika; Hír, János; Kessler, Eugén; Kókay, József (1998–99). "Középsõ-miocén õsmaradványok, a Mátraszõlõs, Rákóczi-kápolna alatti útbevágásból. I. A Mátraszõlõs 1. lelõhely" [Middle Miocene fossils from the sections at the Rákóczi chapel at Mátraszőlős. Locality Mátraszõlõs I.](PDF). Folia Historico Naturalia Musei Matraensis (in Hungarian and English). 23: 33–78. Archived from the original (PDF) on 2011-07-21. Retrieved 2008-08-05.