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प्रश्न
How is the skeleton of a bird well-suited for flying?
थोडक्यात उत्तर
उत्तर
- A bird has a streamlined body. Its bones are light and strong.
- They are hollow and have air spaces between them.
- The hind limbs of birds are modified as claws, which help them to walk and to perch.
- The breast bones are modified to hold massive flight muscles which help in moving wings up and down.
- Birds have special flight muscles and the forelimbs are modified as wings.
- The wings and tail have long feathers, which help in flying. Birds show two types of flight: gliding and flapping.
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