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Animal Detail ViewՄանրամասն` նրանց մասին

28.02.2012

Mallard (Anas platyrhynchos)


Scientific classification 

Kingdom: Animalia

Phylum: Chordata

Subphylum: Vertebrata

Class: Aves

Order: Anseriformes

Family: Anatidae

Genus: Anas

Species: Anas platyrhynchos

                                                                                 

Description 

Without any doubt the mallard is the most recognizable waterfowl in the world. In both sexes the familiar duck morphology is supplemented with a shimmering blue speculum on the wings. Ordinary for duck species is the big difference in the appearance between the males and the females. Characteristic for the male mallards are the green iridescent plumage on the head and neck in addition to the curled black feathers on the tail compared to the female’s drab brown plumage. The male’s shiny green head ends up in a white-ringed neck, a brown chest and grey sides. The bill appears in a yellow color and the legs as well as the webbed feet are orange. The smaller hens are less colorful with her with and brown feathers that helps to blend in the wetland surroundings.

Range and Habitat

The Distribution of the mallards reaches regions all over the world. The Northern Hemisphere is dominated nevertheless mallards also spread out in Southern countries and continents e.g. South America or Oceana. The mallard can deal with different climatic situations, from Arctic Tundra to subtropical regions. In general they favor wetlands, where productive waters produce amounts of floating, emergent and submerged vegetation. The production of aquatic invertebrates in this area is large and beneficial as mallards feed on them.

Distribution range of this species includes Armenia

Behavior 

Towards the breeding season, the flocks formed by the mallards migrate from northern regions to the warmer southern areas. The flocks are normally middle sized, big bevy are a mixture of different duck species. Until the next breeding season begins, they wait in the southern hemisphere. A few mallards pick to stay while the winter in areas where food and shelter is available, these are the so called resident populations. “Quack”, the familiar sound of ducks comes originally from the “decrescendo call” of the female mallard that sounds within miles. The aim of the call is to give other ducks the signal to come to her e.g. her duckling.

Diet

Vegetation, insects, worms, gastropods and arthropods, mallards subsist on a broad variety of food. Human food sources like gleaning grain from crops are taken by mallards as a special advantage.

Reproduction

From October to March the pair bonding takes place. They just pair up during the breeding season, at that time the male advocates a little territory and acts like a guard towards the female before the egg-laying and during the beginning of the incubation period. After the mating occurs the males forsake the hens as soon as possible. Naturally the female mallard lays 9 to 13 eggs in a nest, a grass bowl. The breeding ground is situated on the ground near the waters. After 26 to 28 days the ducklings hatch and the hens accompanies them to the water and never returns to the nest. The hen cares alone for the feeding and raising of the young mallards. Very quickly the ducklings are able to swim and feed themselves. In danger they hide until the mother calls them back. As yearlings most mallard females start to breed, but the success is proved to be less. Researches reveal the duckling death rate of older hens is lower.

Conservation status

The species Listed in the IUCN Red List and evaluated as Least Concern.

 

 

 

 

 

 

 

 



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