Mergus


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Related to Mergus: Mergus merganser, Mergus serrator

Mergus

 

a genus of birds of the famuly Anatidae. The bill is long and narrow, with sharp toothlike projections on the edges of the mandibles. The head is crested.

The genus comprises seven species; of these, five are distributed in the northern hemisphere, one in tropical South America, and one on the Auckland Islands. There are four species in the USSR. The common merganser, or goosander (M. merganser), has a body length of about 80 cm and weighs 1.5-2 kg. It lives in the forest zone from the western borders to Kamchatka, in the mountains of Middle Asia, and on Lake Sevan. The red-breasted merganser (M. serrator) weighs 0.8-1.2 kg. It is distributed in the forest-tundra and forest zones. There are a few colonies on the Black Sea and on Lake Sevan. The M. squamatus is rare (Sikhote-Alin Range). The smew (M. albellus) has a body length of up to 50 cm and weighs 0.5-0.8 kg. It is distributed in the forest and forest-steppe zones and in some places in the south as far as the lower reaches of the Dnieper and Volga rivers.

The birds either winter on unfrozen bodies of water near their nesting places or fly south. They settle on rivers and lakes that are abundant in fish; the smew settles primarily on tidal lakes. The Mergus are excellent divers. They nest on the ground, in rock crevices, or in tree hollows. Eight to ten eggs are laid per single nesting, with as many as 15 by the goosander. The birds feed on fish, on water insects, and, more rarely, on mollusks. Their commercial value is small.

REFERENCE

Ptitsy Sovetskogo Soiuza, vol. 4. Edited by G. P. Dement’ev and N. A. Gladkov. Moscow, 1952.
References in periodicals archive ?
The scaly-sided merganser, Mergus squamatus, also called the Chinese merganser, is an endemic species restricted to Asia (Wang and Xie,
The number of Mergus squamatus in the world population is currently estimated at 2400 individuals (Fang et al.
Scaly-sided Merganser, Daily travel distance, Mergus squamatus, Daily home range, Group characteristics.
Group characteristics of Chinese Merganser ( Mergus squamatus) during the wintering period in Poyang Lake watershed, Jiangxi Province.
Winter ecology and conservation threats of scale-sided merganser Mergus squamatus in Poyang lake watershed.
Habitat selection of wintering Chinese merganser Mergus squamatus was studied using field surveys that documented merganser occurrence in the Poyang Lake Watershed in eastern China, and GIS analysis.
Key words: Scaly-sided Merganser, Mergus squamatus, Chinese Merganser, Jiangxi, conservation threats.
Eight bird species were also observed: common eider, king eider Somateria spectabilis, oldsquaw Clangula hyemalis, common merganser Mergus merganser (1 pair), black guillemot Cepphus grylle, glaucous gull Larus hyperboreus, common raven Corvus corax, and snowy owl Nyctea scandiaca.
Melanitta nigra and Mergus serrator) that occur because certain habitat features extend farther north along the Lena River toward the delta.
Red-breasted Merganser Mergus serrator (French: Harle huppe; Inuktitut: Paaq or Pyle): Rare breeder.
Red-breasted Merganser Mergus serrator: CAIRN COVE: Single birds were recorded on 22 and 25 July 1975.
Red-breasted merganser, 85 21 [+ or -] 28 Mergus serrator