Question

the bird have spindle shaped body. how does it help the bird.

Answer 1

Q. The bird has a spindle shaped body. How does it helps to the bird?

Answer : It minimizes the resistance of air while flying.

→ Extra information :

Flight adaptations of the birds are the following :

1. Forelimbs are modified into wings.
2. Body is covered with exoskeleton of water-proof and light-weight feathers.
3. Long bones of endoskeleton and pneumatic having air cavities.
4. All birds are toothless; their jaws are modified into honey beaks.
5. Body is streamlined to reduce air resistance during its flight.
6. Birds have air sacs helping in double respiration.
7. Fight muscles are well developed.
8. Tail feathers from a steering apparatus.
9. Birds have a acute vision.

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Answer 2

ANSWER :

Birds are the most common flying animals. Their Wings are covered with feathers.

THEY HAVE A STREAMLINED BODY WHICH MAKES IT EASY FOR THEM TO MOVE THROUGH THE AIR AND SPINDLE SHAPED BODY REDUCE RESISTANCE IN AIR.

They Beat their wings against the air to propel  forward. The bones of the birds are hollow and are very light making it easy for them to rise in air. Strong muscles in the breast bones help the bird to fly their wings and fly.

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