Study life

  Birds Sparrow, crow, pigeon, parrot, eagle, hen, duck, swan, ove and peacock, are all birds. Birds walk on the ground and igh also fly in air. Some birds (like duck and swan) also swim in my water. Birds walk on the ground by using their hind limbs (see Figure 18). Those birds which swim in water do so by raig pushing against water with their hind limbs which have d trio webbed feet. The webbed feet help the bird in swimming in water. The birds can fly because their bodies are adapted (or modified) for this purpose. The main adaptations which have been made in the bodies of birds by nature to enable them to fly are the following: Their forelimbs are modified to form wings for flying.  Their flight feathers provide a large flat surface which is light but strong. Their bones are hollow and light. Their bodies are streamlined and extremely light. They have powerful flight muscles. Their breastbone is extended (as keel) for the attachment of large flight muscles (which move the ...