- 글로벌메뉴
- KOREAN
Korea Biodiversity Information System > Wildlife Resource > Bird Classes > How Birds Fly
The body structure of birds shows that they have evolved for flight. A carina, a unique skeletal structure that only birds have, provides buoyancy and propulsion to facilitate flying, and their strong muscles enable them to fly long distances. Their body structure characteristics show that birds have much larger breast muscles than mammals. Moreover, birds are much lighter compared to their body volume because they have less body fat, short intestines, and pneumatic bones filled with air. These pneumatic bones are hollow and very light, and help birds to land safely by absorbing shocks. The feathers on their wings enable birds to overcome air resistance and stay in the air for a long time.
