Behind the territory of a polar circle there are such zones as the forest-tundra, the tundra and also a zone of the desert of the Arctic. The main difference of all these zones consists in polar night, small summer and in low temperatures. How do animals live in cold areas? It is the best of all to present it on the example of predators, birds and rodents living in northern areas.
The owner of the North - a polar bear
The largest predator of the cold Arctic by right is the polar bear. By the sizes and power the polar bears concede only to brown relatives and bears on Alaska. Most often such bears live in the territory of pack ice and also in the territory of coastal areas.
The main production of polar bears are fishes, less animals and also plankton which is in an inflow strip. However most often polar bears prefer to hunt small seals. Especially as in the territory of their Arctic there is a lot of.
During hunting for other animals which polar bears can scent for kilometer the polar bears usually creep up to them on a belly. Someone also notes that during hunting the polar bears close a black nose a paw that what not to give themselves during hunting and prosecution. After the choice of the victim the polar bear tries to catch it during a throw, and after that to depart with production far away and to enjoy a meal.
This predator moves to warmer period closer to the tundra there to diversify a diet with lemmings, birds and also lichens and berries. As for the dwelling, the most often found view of the house is the house created by bears in ice. Females of polar bears are capable to give birth to both one, and several bear cubs for once.
Tundra partridge
It is possible to call this bird the most real aboriginal of the tundra of the Arctic safely. The partridge lives settled and reaches 33 centimeters in length. The partridge eats leaves, kidneys and berries of different types of undersized vegetation. After the winter comes to the tundra, plumage of a bird grows white and to be protected from frosts, the partridge hides under snow.
Family life of a partridge is interesting. In a laying usually 10-15 eggs, and are engaged in their education two parents at once that is unusual to similar to it birds.
Males protect the posterity selflessly, and sometimes for this purpose uses cunning. If they see a predator, then try to merge with the area and wait until the animal approaches. After that the male of a partridge sharply jumps up under the very nose a predator, shouts, claps wings and tries to knock the enemy on the head. While the predator recovers, baby birds already manage to escape, and parents – to depart.
Lemmings
And one more type of living beings of cold regions is lemmings. Today they are the most numerous mammal rodents. These relatives of voles eat a grass, a moss and also branches of trees and berries. They live colons, creating a system from nested cameras and holes.
Periodically there is a mass reproduction of these mammals that is connected with the fact that during the period from spring to fall one female can give birth to 20-25 kids.