What makes the birds fly, birds fly, is the year before. I know. The birds of the year, but is different. But the flight of different birds. But the flight of birds with different!
Wings of birds can be classified into four types.
Thin, flat wings. And convergence towards the end. Remember the bird flies faster and turns to go fluently. Found in birds or birds in the air is often tricky to fly long distances, such as bird's nest. The bird's nest.
Wings long, narrow wings for gliding by. Most of the birds gliding in the air for a long time. They eat fish, they will be able to glide over the surface with little time to get wings like a seagull.
Curved wings and wing separated from each other for very high temperature. He was raised by a force of hot air rising from the floor. Often found in large birds such as eagles living in the area.
Short, narrow wings for fast flight to the short term. Including aviation in the dense forest or in a bulbul.
The flight of birds, not just relying on its wings only. However, the physical structure as well. It evolved through the porous bones. The attenuation of the internal organs, so that the bird is light. Plus respiratory and circulatory diseases, and other. Including the lungs and air sacs that are located throughout the body.
But there are some animals that have wings to fly, they are not like chickens, ostriches, penguins, for example, if we observe it. These birds are found to Goliath. In a letter to bombard the wing can not fly over it.
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