Birds

Birds

Birds Flight

Though all the birds have wings. But some of them do not fly  for example Ostrich, Kiwi, Penguin, etc. Feathers help the birds to fly smoothly in the air. Feathers are lightweight and have  an aerodynamic surface that can be twisted and tilted in order to control the movements while soaring, swooping, turning or diving in the air. When birds fly, their wings move downwards and feathers spread out, thus increasing the surface area. The front portion of the wings are lower than the back ones and thus push the air in downward and backward

 directions. When birds lift themselves, wings become vertical in the forward direction, which gives them extra push to lift themselves up and fly smoothly in the open sky.

Wings

The shape of wings helps the birds to fly by lifting them off into the air. The large birds ,such as Vultures flap their wings slowly and glide in the air whereas the smaller birds flap their wings frequently, to  remain in the air.

Feathers

The feathers of birds are made up of a protein known as keratin.  Bird has nearly 900 to 25,000 feathers on their  body depending on the species. Male birds have more colourful feathers than the female birds. As the birds depend upon their feathers to fly they need to keep them in proper condition by combing, cleaning and preening their feathers.