These animals have hollow bones.

Choose the suitable word given below and fill in the blank.

(backbones, horns, trees, humps, tails)

_____ of birds help in changing the direction.

Recall and complete the concept map given below.

The _____ of a bird helps to change direction while flying.

Fill in the blanks to label its parts.

Write two examples of wading birds.

Look at the following pictures of animals and the question that follows.

Which of the following animals are birds?
 

An ostrich cannot fly.