Question

List out any 4 important characteristics of birds

Answer 1

Feathers.

High metabolism.

A four-chambered heart.

A beak with no teeth.

A lightweight but strong skeleton.

Production of hard-shelled eggs.

Answer 2

Answer:

Birds are vertebrates – they have an inner skeleton that contains a spine, limbs, and a skull;

Birds are endothermic – they maintain constant body temperature by themselves, without depending on outside factors;

Birds are bipedal (i.e., they move on two limbs when they are on the ground);

The upper limbs of birds have evolved into specialized structures – wings, that allow flight;