Question

mention four special features which help the birds to fly?​

Answer 1

Answer:

Birds have many physical features, besides wings, that work together to enable them to fly. They need lightweight, streamlined, rigid structures for flight. The four forces of flight – weight, lift, drag and thrust – affect the flight of birds.

Answer 2

Answer:

1)Lightweight, smooth feathers – this reduces the forces of weight and drag

2)An enlarged breastbone called a sternum for flight muscle attachment – this helps with the force of thrust

3)Light bones – a bird’s bones are basically hollow with air sacs and thin, tiny cross pieces to make bones stronger – this reduces the force of weight

4) A rigid skeleton to provide firm attachments for powerful flight muscles – this helps with the force of thrust

Explanation:

Hope it helps you!!!