From ancient times, the first sign of the coming autumn colds considered truly beautiful sight when the birds gathered in flocks, fly away to warmer climes.Why did they leave us?And why with the onset of warm spring days, they will certainly come back?
Birds
Birds - a warm-blooded creatures.Their body temperature is one degree forty.Because of this, they would feel fine and frosty days.So why migratory birds fly?They can not stay for the winter birds, because in cold seasons it is almost impossible to get food.Some depart from the cold.They migrate to warmer climes to keep most of the individuals.
For migratory birds, ie those who leave our area in the winter and flies away to the south, is a lot of species of birds.Among them, the lapwing and the swallow, wagtail and finch, robin and song thrush, oriole and the redstart, tree pipit and skylark and Common Chiffchaff.
When and how birds fly
At a time when the birds are leaving our region, can influence the weather.However, as a rule, it takes place in one and the same time.Autumn departure begins only when the young birds get stronger.
Most birds gather in flocks.But there are those who fly in groups.Some species migrate singly.
Beautiful wedge line up in the sky cranes.But the crows are usually placed chain.There are some species of birds, whose males fly after females.Some birds just leave rendered habitable area youngsters.Individuals older than follow some time for them.
Try birds navigate during the day and at night to rest.In some species, the flight - overnight.
resident birds
They leave rendered habitable area, not all representatives of the feathered world.Some stay for the winter and delight us with their songs frosty days.They live in their home country throughout the year, so they are called sedentary.Do not leave their seats grouse.He eats pine needles and winter so it is not necessary to look for food.Juniper berries eat grouse and grouse.They, too, will not going to fly away in the autumn.But Jay - a migratory bird or not?This species belongs to the birds settled.Jay eating vegetable and animal food.She loves acorns.His beak bird easily split the shell of the fruit of the oak.Jay autumn harvest acorns in large quantities.One bird, according to some, makes supplies weighing up to four kilograms.
to settled also include woodpeckers and titmouse.But even in winter crossbill hatches chicks.He eats seeds eaten.
Nomadic birds
There are species of birds which cables carry to another place, if they for some reason in his native locality unfavorable conditions.It usually birds living in the highlands.With the onset of severe cold, they migrate to the valley.
Birds - the creation of amazing.In some places they can live as sedentary, while others are migratory.
Why do birds fly
our region very first cuckoo leave.Behind them - a swallow, a little later - swifts.From late August to September several types of climate change on the warmer.
What are the causes of bird migration?Birds fly away with the onset of cold weather.However, the main reason for their migration is not in the changing of the season.The decisive factor is the lack of food.For one hour the cuckoo eats up to one hundred tracks, and during the cold insects disappear.Most of them die, leaving a large supply of eggs from which will spring offspring.Some insects are hidden in secluded warm places.
summer Stork feeds on small fish and frogs.In winter, it is not able to get their own food, which is under the crust of ice covering the water.Birds that can not produce their own food, fly south.There are problems with the food they arise.
annual cycle of birds
life of birds, as well as other animals, in most of our planet passes in a change of seasons.The exceptions are only those areas where the tropical forests.
annual cycle of birds consists of four main stages.The first of them - is the breeding period.Then comes the moulting, seasonal migration of birds.The last step is the winter.
As for seasonal migrations, they have the birds are not a continuous period.Hops have spring and autumn.However, they are separated with each other wintering stage.Spring migration of birds can be seen as a phenomenon that is partly linked to the preparation for the breeding stage.Autumn migration - a search feed for species conservation.
migration routes
Where birds fly in the fall?This question could answer in detail ornithologists.Okoltsovyvaya migratory species, they found wintering sites of various kinds.In some warmer climes birds fly?The suitability of an area for the winter determines the course of its ecological environment.However, not all birds migrate to places that are far from their nesting and have favorable conditions.To a greater extent here plays the role of competition with other populations of the same species, which tend to take the most convenient for the wintering areas.So, the bird, who arrived from areas to the north, can be located in more southerly latitudes.
From Europe birds can fly not only in the south.Wintering they make and in the west.Many northern European and Central European birds harbors England.This country has for the birds favorable climatic conditions which are typical small snowfalls and mild winters.In England in the fall fly lapwings and sparrows, woodcocks and other birds.However, a greater number of birds attracted to the Mediterranean and south-western areas of Europe.
Places
wintering in warmer climes which birds fly?A large cluster of feathery observed in winter in the Nile Valley.On the African wintering fly some Arctic and Siberian birds.Their numerous flocks are located in the southern regions of China, India, the islands of the Indo-Australian Archipelago.In the northern parts of Africa and Western Europe arrive quail and waterfowl.The way some of the species of birds to the wintering areas very far.Thus, the red knot and walking in the East Siberian reach the coast of New Zealand.
answer the question about where the birds fly away for the winter, to help research scientists birdwatchers.For okoltsovyvaya birds, they found that our blackbirds and starlings resting in the south of France and Portugal.They are justified in Spain and Italy.Ducks and cranes like to travel to the banks of the Nile.Hoopoe and nightingales spend the winter in the African savannah.
Some species of waterfowl do not leave the territory of Russia.In the cold season, they settle in the reserves, located in the South Caspian Sea.Kryakovyh ducks can be found in winter in the South Caucasus.Rest they Azov and Black Seas.
In some warmer climes fly birds living in the north of the American continent?Here, their migration through the influence of the Gulf Stream is just to the south.So, Arctic terns, who live in the North America, settle for the winter in the south of the continent.Sometimes these birds migrate to the African countries.They get to Antarctica.
What places for wintering birds choose?
Typically, birds settle where the habitat is similar to the one in which they live in their homeland.If your nesting birds choose wood, then these are the areas they will be looking in areas with warm climates.Birds living in steppes, meadows and fields, will seek to settle the usual conditions for himself.This will find their usual food.Thus, the birds migrate to those regions, living conditions that differ little from the usual for them.
Road to the wintering grounds, they are great thanks to advanced navigation system.Some birds are the major landmarks mountains, seashores and so on.There are species that do not easily cross the different variety of water surface of the ocean.
Those birds that depart in the afternoon, guided by the sun.Those birds that travel in the dark, rely only on their own navigation system.
retreat winter cold, and flown away to warmer climes birds come home again.They will be notified of the arrival of spring provocative trills and will prepare for the next stage of his life.
Now you know, in some warmer climes fly the bird.I wish you success in further study of birds!
