- Jan 14, 2020
- Jan 14, 2020
Ostriches though wonders for our latitudes, however the image of the birds hiding for fear the head in sand, entered our culture long ago. All know that it is they from hot Africa, and even the beginning krossvordist surely knows a version under the name of an emu. It is interesting to find out what else facts about ostriches the modern science has and stereotypes which were how developed about them are true.Than are remarkable
The ostrich African (in Struthio camelus science) is the only representative of family of ostrich (Struthionidae). Here appropriate will be to dispel the settled delusion that the emu is his subspecies. Earlier really was considered that it is related birds, however classification was reconsidered, and the emu at all external similarity was carried to family of kazuarovy (Casuariidae). So the African ostrich lost the Australian fellow.
Together with penguins, the kiwi and others belongs to group of not flying birds. It is caused by the fact that ostriches have no Kiel necessary for flights, pectoral muscles are weak, clavicles are underdeveloped. Even the structure of feathers is focused on heating of a body, but not on flight therefore at ostriches they soft and fluffy, without catches tying small beards of feathers. The body is covered with planimetric feathers evenly and has no apteriya that distinguishes them from the flying birds. At the same time at ostriches extremely strong legs and acute eyesight – it provides their survival in the nature.
Some interesting facts:
the Paw of an ostrich – one more unique line of a bird
Earlier the area of dwelling of ostriches extended to territories of Africa and the Middle East, including Arabia, Mesopotamia and Persia, however hunting for them led to disappearance of Middle Eastern subspecies. Today ostriches live almost across all territory of Africa, excepting the North of the continent and the Sahara. At the same time the bird well adapts to life in bondage, and today ostrich's farms exist worldwide.
Made attempts to cultivate an ostrich of people long since: about it there are mentions dated 1650 BC. At first were engaged in their domestication in Ancient Egypt, later – in China. The true success was in this case achieved at the end of the 18th century. In 1838 in South Africa the ostrich's farm appeared. Mass chicken farming for commercial purposes began with it.
First ostrich's feathers were of the main value: big and beautiful, they served for the decorative purposes, decoration of ladies' hats and production of fans . Feathers were so demanded that ostriches were nearly exterminated. Can be told surely that cultivation in bondage saved them as a look. For receiving feathers before birds just plucked, now cut them once a year on reaching an individual of age of 2-3 years.
The ostrich is not only valuable feathers, but also refined meat. At gourmets it is in great demand. Nutritionists compare it to veal or low-fat beef and claim that it is very useful. To food there are also eggs of these birds. It is no wonder that it is the largest eggs in the world, and the shell covering them so strong that weight of the adult can be insufficiently that to break it. The shell has the application too: serves in creativity as a basis for painting or an engraving.
Besides, fat and leather are of value. Fat is used as ingredient for production of cosmetics, and leather can serve as material for creation of the most different products. The moisture resistance, flexibility and unusual texture therefore it uses the deserved attention of designers are peculiar to it.
Demand for products of a strausovodstvo grows every year so promptly that the existing ostrich's farms are not enough for its covering. It is possible to tell that their cultivation – an excellent niche for business, besides the received material and meat, the farm attracts the tourists wishing to see exotic. The bird will well acclimatize and can live in various conditions including in Russia. Today there are already many ostrich's farms in the territory of the Russian Federation, but their quantity continues to grow.
Deprived of an opportunity to fly, the ostrich compensates it by talent of the runner. Long strong legs allow it to disperse up to 70 km/h, and at a short distance – up to 90 km/h ! The bird differs in endurance and can run many hours tirelessly. These surprising abilities did not remain unnoticed, and application with advantage for people was found for them.
It is difficult to present, but ostriches can be used as the cartage: they are harnessed, like horses or oxen. However, despite the physical data of a bird disposing to her such use there is essential minus. The bird has no high intelligence and hardly gives in to training, besides can aggressively behave, and it has enough forces to cripple or even to kill the person.
It is possible to ride out and ride also a bird, she without effort maintains the weight of the person. Even there is such spectacular sport as riding ostriches. For the first time it appeared in Kenya as entertainment for the European tourists. Today such competitions have many admirers, and in Arizona (USA) even the annual ostrich's festival with runnings is held. Jockeys, like horse equestrians, sit astride and operate a bird that is very difficult and dangerous therefore there are also races where ostriches run independently.
Here such they, these giants of the bird's world. And finally we will consider the main issue: whether really ostriches hide the head in sand? No, do not hide. Sometimes it is possible to observe how they bow to the earth, however at it other reasons: first, birds can try to discover stones in sand then to swallow for digestion improvement. Secondly, the females occupied with incubation of eggs bend down to the earth in case of danger to become less noticeable. The interpretation of such behavior known to all originates from works of the Roman philosopher Pliny the Elder. He wrote that it seems to a bird as if all her body is hidden, she should hang only the head in sand. This version got accustomed and entered many languages of the world as a bright image.