Some birds, with the onset of cold weather, leave their native lands, going on long journeys to the southern latitudes. This beautiful sight can be observed every autumn, and only the farewell cry of migratory birds will remind of feathered wanderers for some time.
Instructions
Step 1
The reasons why some birds fly south are obvious: in winter it is difficult to find food under the snow, and the ambient temperature becomes too cold. The fact is that birds are warm-blooded animals with a body temperature of 40 ° C on average. When cold weather comes to the region, some birds lack warmth, as their feathers and down are not enough to survive the severe frosts. But not all birds are cold in winter! For example, crows, sparrows, tits, pigeons are not afraid of cold weather. They are sedentary, i.e. do not leave their native northern latitudes, but hibernate with a person. Such birds find food near garbage cans, in feeders, eat winter berries on trees, etc. The fact is that the amount of subcutaneous fat and feathers, as well as the structure of their body, are somewhat different from the physiology of migratory birds.
Step 2
Most migratory birds are insectivorous creatures whose diet in winter is reduced to zero. That is why migratory birds go where it never snows, and their food remains complete. Migratory birds include blackbirds, rooks, jackdaws, finches, dawns, warblers, buntings, and swallows. In the summer, these birds feed on large insects (May beetles, dragonflies), while in winter it is simply unrealistic to meet them in the northern latitudes. For example, many swallows generally fly to the Mediterranean coast, and the most desperate of them go straight to Africa! Beautiful cranes also fly away to the south. Already in September they are going on a long journey. These beautiful and graceful birds say goodbye to people until spring, at which time their beautiful and guttural cry is clearly heard in the sky, spreading throughout the clean and autumn air.
Step 3
Birds such as hawks, kites, cuckoos and kingfishers fly away to warmer regions one by one. But most migratory birds, nevertheless, leave their native northern latitudes in whole flocks. For example, cranes build a graceful and beautiful wedge in the sky, and ducks form oblique rows. Migratory birds also include such birds as lapwings, swifts, orioles, warblers, starlings, shrikes, nightingales, herons, swans, hoopoes and wagtails. Migratory birds return to their homeland at different times: some earlier, some later. For example, swallows are called the people's messengers of spring, although there is an opinion that the rooks are the first to arrive in their native lands. Since ancient times, the return of rooks has symbolized the arrival of spring and warmth. Such a reputation of spring messengers made these birds popular favorites: they are greeted with joy, they are trying to feed them.
