In recent years many birds have died and there aren't as many as before. In some places people have killed too many birds for food or for sport and there are now very few left. Lakes and marshes have been drained so that we can build houses or grow crops. The trouble is - wetland birds live in these areas and eat the insects and fish living in the water. When the lakes dry up, the birds have less places to live and many die.
People use too many pesticides to control insects and bugs that are eating their crops.
Using too much pesticides can result in killing useful insects and even birds and other wildlife. 1,186 of these are in serious trouble and could go extinct if we do not help. When a bird goes extinct, this means that there are no more birds of that type left anywhere in the world. They are all dead. We will never get the chance to see that type of bird again.