Bird

Birds are a group of warm-blooded animals with feathers, wings, beaks and no teeth. Most birds can fly, though some, like ostriches and penguins, cannot.

Features

Birds lay eggs and have lightweight bones that help with flight. Their feathers help them fly, keep warm and attract mates.

Diversity

There are thousands of bird species, from tiny hummingbirds to large eagles. Many migrate long distances between seasons.

Frequently asked questions

What are the main features of birds?

Feathers, wings, beaks and laying eggs.

Can all birds fly?

No; some, such as ostriches and penguins, cannot.