1. The World of Birds

2. What makes birds different from us?

5. Indian Weaver Bird’s Nest

6. Crow’s Nest

7. Peacock’s Nest

8. Cuckoos do not build nests
Most cuckoos,do not build their own nests or hatch their own eggs. Instead, females lay their eggs in the nests of other birds. These 'hosts' hatch the eggs and feed the resulting young after they hatch. 

11. Features Of Birds

12. How can birds help the environment?
Many plants and trees depend entirely on birds to spread their seeds.
Birds eat insects and dead animals like rats

13. Why Do Birds Become Extinct?
Use of pesticide
Increased human populations creating a need for more land to support those people. Humans destroy their shelters.
Birds are being hunted down.
Birds die because of environmental changes

28. Domesticated Birds

30. Thank You