Question

State five features in birds which show their adaptation for flying

Answer 1

hey mate it's your answer......

1) they have pneumatic bones..i.e. porous bones.....to reduce weight..

2) their forelimbs modified into wings...

3) they possess only left ovary

4) they possess only left testis...

5) they possess feathers ...which help them to fly....

Answer 2

they have streamlined body for flying
they are 4 chambered heart

for explanation