19、As can be seen, there are three people all calling themselves bird lovers. However, the ways they treat birds vary enormously.

The first is a little boy who managers to put a wooden box in the tree as a house for birds to stay in. The second is an aged man who catches a bird alive and keeps it in a cage which he carries about. While the third, a young man, shoots many birds to cook for dinner.

Nowadays, many people who consider only their own convenience ignore the necessity of keeping the balance of nature, causing great harm to our environment. In order to prevent the earth from being destroyed, we should educate the public to love nature. At the same time, tougher laws should be made to punish those who kill wildlife. To protect nature is to protect ourselves.