Question

Which one is characteristic for birds?

• A. They are flying animals.
• B. They are bipedal and have feathers.
• C. They are warm-blooded.
• D. They are quadruped and have scales.

Answer 1

Answer: (B)

All birds have feathers. They are vertebrates. They have hollow bones which them to fly by the use of wings, but some birds are flightless. All birds are warm-blooded and oviparous. They can regulate their body temperature. They are bipedal as they have two rear limbs or legs for terrestrial locomotion.