Question

How are birds able to fly?​

Answer 1

Question ⤵

How are birds able to fly?

Answer ⤵

Bird's skeleton is very light because their bones have large air cavities as compared to other animals/ humans. This mske their body light. Their forearms modifies to wings. This feature help them in flying.

Answer 2

$\huge\mathcal\purple{ANSWER}$

$\huge{↝}$Birds obtain thrust by using their strong muscles and flapping their wings. Some birds may use gravity (for example, jumping from a tree) to give them forward thrust for flight. Others may use a running take-off from the ground.