Birds (Latin, Spanish, Portuguese, Italian: Ave, German: Vogel, English: Bird, French: Oiseau) Although there are some insects and fans of bats, birds have feathers only. There are approximately 10000 species of birds in the world. In general, all living birds belong to the Neurithic group. Birds of the class (Aves) have been organized into 23 classes, 142 species, 2057 masses, and 9702 species. [2] However, new species are constantly being discovered and new species are identified by dividing older species. Fossils available so far indicate that the birds appeared in the Jurassic period, about 16 million years ago. According to paleontologists, after the extinction of Cretaceous-Palaeogene half-a-million years ago, birds were the only descendents of the four-colored dinosaurs. Among the living birds, Moe Hummingbird is the smallest (only 5 centimeters or 2 inches) and ostrich is the largest (2.75 meters or 9 feet).
Birds such as fish, amphibians, reptiles and mammals also have vertebrates. The main features of modern times are the feathers, the toothless snakes, the hard shelled eggs that leave their descendants, four cellular heart, high cell organic chemicals, light but strong bones. All the birds have wings, the only exception is that of the now New Zealand's Moa The front angles evolved and became the form of a wings. Almost all birds can fly and the birds of evacuation (such as ostrich, penguin) can evaporate the ancestral crop. Most of the birds unable to fly are native residents of several islands. The digestive process of birds is easy for them to fly and is completely different from all other animals. Among the birds, some species, especially cough and tiercinous species, are one of the most intelligent creatures in the animal kingdom. A few species of birds have developed the technique of making small tools and using them. After some generations of generations, some generations of people are seen to have the knowledge necessary for their living
of the migratory migratory birds During the year's time, they travel across vast distances from one place to another. This type of transit can be seen from the short-lived irregular movements. Most birds are social organisms. They communicate with each other through visual signals and postal codes. They also participate in various social activities, such as participating in breeding during the same season, together with colonies, living in flocks, finding food in groups, and even driving the enemy out of the party. Most birds are only for a breeding season or for one year long, it is rare to see the pairing for a lifetime. Variants of polytheism can be seen in birds. Birds usually lay eggs in their prepared baskets and parents dump their babies. Most of the birds follow the baby for a few days even after the baby has exploded.
The economic importance of the bird is very much. Their importance as food is immense. Many species are hunted for meat and some species are commercially observed. Tia, Meyna, Parrot, Chandana, many species of birds and birds of the birds have a great deal of habit of pet birds. The quality of the cow's fiber is as good as its fiber and its commercial importance. Birds have a great place in literary, cultural, religious, and even social fields. Since the 17th century till date, 120 to 130 species of species have been lost forever from human activities. Before that, more than one hundred species had the same fate. Today, at the end of the extinction of about twelve hundred species of people being victims of cruelty. Recent steps have been taken to preserve some species.