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Description of wild ducks with a crest and a sharp beak, the habitat of mergansers

Description of wild ducks with a crest and a sharp beak, the habitat of mergansers



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There are many species of ducks in nature. The merganser is considered one of the largest. It is a solid duck about the size of a medium goose, with a crest and a sharp beak decorated with a series of notches. This immediately indicates the type of feeding of the bird, since such a device helps to capture and hold small fish, direct it to the throat and swallow it. The merganser is a whole genus of waterfowl with common characteristics. In Russia, two types are widespread: scaly and long-nosed merganser.

The origin and description of the merganser duck

It is a large diving duck, larger than the mallard - the most common member of the duck family. Mergansers are a separate genus of this family, which includes 4 now living species and one extinct a century ago. All of these ducks are considered rare or very rare, but their total number at the moment does not cause concern among environmentalists. Similar species also include slugs and crested mergansers.

Mergansers weigh from 900 grams (females) to more than 2 kilograms (males). Drakes are brightly colored, distinguished by a black head and back, a dark gray part at the tail. The rest of the body is white with the finest pinkish tinge. The duck is grayish-ashy above, white below, its head is brownish-red.

Birds have orange-red beaks, like paws. The edges of the beak are provided with special notches that help catch and hold slippery fish. From a distance it seems that the mergansers have beaks with teeth. Because of this, the people often call the bird a bison, and due to its long neck and the habit of eating fish, it is confused with a cormorant.

Expert opinion

Zarechny Maxim Valerievich

Agronomist with 12 years of experience. Our best summer cottage expert.

On the head of males and females of ducks there is an original crest, consisting of long and thin feathers. They are elongated towards the back of the head and give the merganser a slightly disheveled, disheveled appearance.

Habitat

This wild duck lives in northern European states, in Russia and America, as well as in parts of Japan. They prefer to choose the boundaries of wooded areas, stay close to water, because they are waterfowl and feed mainly on fish, small invertebrates and crustaceans.

Different types of merganser ducks are found in the tundra and forest-tundra, as well as in mountainous areas, for example, in the Alps or in the Scandinavian mountains. They migrate not to the tropics, but to the middle zone, not descending south of the steppes and forest-steppes on the coast of the Black and Caspian Seas.

Little ducks are cautious birds, so they try to choose open water bodies that are not overgrown with lush vegetation. For takeoff, they need a large body of water, so they cannot be found on small ponds, lakes and rivers.

What does it eat?

Gourmets with a delicate taste can envy the diet of merganser ducks. These birds prefer to eat rather large fish, up to 25 centimeters long. From river fish, ducks choose trout and small salmon, as well as grayling, pike, roach, eels and many others. When they are on the sea coasts, in estuaries of rivers and on estuaries, they catch herring and other marine fish that are suitable for them in size.

The following types of food are also used:

  1. Shellfish.
  2. Crustaceans.
  3. Insects.
  4. Worms and so on.

Merganser ducks hunting looks original and unusual. First, they are half submerged in the water, looking for prey, and then they dive, helping themselves with their webbed paws, like flippers. It is because of this behavior that merganser ducks are often confused with cormorants.

The nature and lifestyle of the duck

Mergansers are migratory or partially migratory birds. They go to winter in warm countries in October, early November, but return to their homes early, already in February. Departing, ducks form huge flocks, numbering hundreds of individuals, and return in small groups of no more than two dozen birds. In warm weather in mild winters with little snow, most mergansers do not fly south at all.

Those populations that live in the southern regions make the so-called vertical migration, moving over small distances.

These large birds are distinguished by a calm character, but on occasion, ducks can fend for themselves, because with their long red beak they not only successfully catch a rather big fish, but are also able to pierce the strong shell of crayfish.

Social structure and reproduction

Sexual maturity in merganser ducks occurs at 2 years. The marriage ceremony is very beautiful and unusual. A male in a spectacular bright outfit performs an original dance in front of a selected female. These ducks rarely form stable pairs. Usually the female incubates the clutch, and the drake does not take any part in the fate of the offspring. Most often, it simply disappears after the end of the mating season. The female lays from 8 to 12 eggs of a white or cream shade. Nests are arranged in hollows, females choose a place for them, since males do not take any part in raising offspring.

If there are no suitable hollow trees in the vicinity, ducks can make a nest in the rocks, but they try to avoid dense thickets and tall grass, as predators can easily sneak up on the clutch.

Females differ not only in color from males, but also in the length of the feathers on the back of the head. They are thicker and shorter than those of drakes. During the nesting period, ducks pluck out their own plumage - fluff from the breast, which is used to line the litter under the masonry.

Ducklings are at first very similar in color to their mother, only covered with soft and delicate down. They stay in the nest for no more than 2 days, after which they become independent, they swim perfectly. They have a developed instinct to follow, so you can often see the following picture: a merganser duck is floating in the water, and behind it is a brood of fluffy ducklings lined up in a chain.

Natural enemies of the merganser ducks

These ducks are large and strong enough to resist even larger opponents. They are armed with a sharp, long and strong beak, equipped with a jagged edge, as dangerous as a saw. They can seriously injure them.

Basically, the enemies of the merganser ducks are people, but the following animals can also attack them:

  1. Foxes.
  2. Raccoon dogs.
  3. Domestic and feral dogs, if ducks dare to nest near villages and towns.
  4. Birds of prey - eagles, sea eagles, seagulls, crows and so on.

Smaller predators, for example, mustelids or wild cats, cannot always cope with an adult duck, and even more so a drake. Most often they destroy nests, attack chicks or sick, wounded birds. Also, some reptiles can attack the brood or clutch, and large fish themselves can attack the ducks, but this rarely happens.

Population and status of the species

Mergansers are rare species, in some countries - endangered. So far, nothing threatens their population, since the number is considered stable. However, in a number of countries, the merganser ducks are listed in the Red Book, for example, in Belarus and Lithuania. This is due to the fact that the number of birds on the territory of these states is small and constantly decreasing.

The situation is also related to the type of the population itself. If the birds are sedentary, they are less threatened, and the number of mergansers remains stable. Migratory ducks are exposed to more hazards when moving from one place to another. Also, the biggest risk factor is human activities that destroy the nature and habitats of ducks.


Watch the video: Common Merganser catches crayfish and saves it for dinner. (August 2022).