The bodies of birds are adapted for flying. Many of a bird's bones are hollow which makes birds' bodies lightweight. Flying birds have large chest muscles that move the wings. Birds have feathers that help them fly.
Ans 4:
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Kavya pandey
from
The shishukunj international school, Indore
Class : Class 5
hollow bones,streamlined body,feathers and wings.
Ans 5:
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Madhavi
from
Kendriya Vidyalaya ASC Centre, Bangaluru
Class : Class 5
Feathers covering their body . Wings with powerful muscles.Hollow to reduce body mass