The paragraph below is out of order. Correct these sentences as you have been instructed. It will be printed. Feathers protect a bird's skin and help it keep warm.
Feathers also help to waterproof a bird's body.
A bird is an animal with feathers. Some birds such as the penguin, though, cannot fly. A bird has two legs and a hard beak. These bones make the bird lighter and better able to fly. It also has many bones that are hollow like a straw.