We really see a wonderful sight every fall, when numerous flocks of birds fly to warmer climes, and only a farewell cry reminds us of them for a long time. And involuntarily we raise our heads and watch the receding jamb against a bright bright sky.
And
which birds fly south in the fall? And why do they leave us? And why come back in the spring? Surely each of us asked these questions, looking at them.
Causes
Birds are warm-blooded creatures; their usual body temperature is about forty-one degrees. It would seem that in the winter season they should feel great. It is, however, when it is cold, many of them find it difficult to get their own food, and for some species it is generally impossible.
But still there are those who fly away because of frost. Therefore, at times risking their lives, birds fly to where they can save most of their flock and have offspring without problems. Naturally, many fly away not because of a lack of food, but because of the onset of cold weather.
What birds fly south in the fall not because of food? They are called migratory. These are such birds as a swallow, swift, lapwing, finch, songbird, redstart, oriole, tenochka and others.
What other birds fly away? Of course, plovers, rooks, siskins, starlings, oatmeal, zhulans, lapwing, forest skates, warblers, robins, nightingales, black-headed oakheads, flytraps, herons, wagtails, swans, hoopoes, storks, larks, geese, ducks, cuckoos, .
But there are sedentary birds, they do not leave their homeland all year round. Walking through the
winter forest, you can see sparrows, titmouse, jays and woodpeckers.
There are still birds that do not fly south in the fall, but roam. They move to another place only when the former has become unsuitable living conditions. On the territory of Russia, these birds include jay, bullfinch, crossbill, titmouse, nuthatch, cabbage, siskin, siskin, waxwing and others. Typically, these species live in the highlands, but with the onset of severe cold they settle in the nearby valleys.
Which birds fly south in the fall, understandably, but why do they go there? Usually they move to where conditions resemble their locality. For example, if they live in the steppes, then they will fly to fields and meadows, if in a forest, then to a thicket. The weather can affect the time of their flight, but usually they do it at the same time. Autumn departure begins when the chicks grow up. The birds gather in flocks, and some, one by one, leave their homes.
Which birds fly south in the fall with beautifully ordered jambs?
Probably each of us asked a similar question to our parents. Of course, these are cranes. And, for example, crows fly simply in a chain. In some species, males leave nests earlier than others.
Mostly they fly during the day, resting and eating at night, but there are those who do the opposite. Some birds do this quite low, while other species rise very high into the sky.
In autumn, birds fly south due to changes that occur in their bodies. There is a version that the development of hormones that push birds to reproduction, as well as the fact that they are removed from their homes with the onset of cold weather, is to blame. However, this has not yet been scientifically proven.
Conclusion
Birds are amazing creatures and very intelligent in nature, and we can only ponder why they fly south in the fall and then come back to delight us with their beauty and singing.