Screaming is the behavior problem most likely to cause a bird to lose his home. The first decision you need to make is whether your bird's screaming is normal. All birds are loud twice per day. However, birds that scream rather than talk or play and spend more than 5 minutes yelling, have a problem. 

Birds call each other throughout the day to locate individual members of their flock. When your bird calls to you, he simply wants to hear where you are. Running to him will only teach him to call more often and his calling may escalate to problem behavior. Prevent this problem by providing your bird with social interaction with the family each day and provide appropriate toys in his cage for his time alone. Give him attention while he is playing quietly or doing the things that you would like to see more of. During the day, call to your bird from other rooms in the house while he is quiet or talking. You may leave the radio or television on to keep your bird company. 

If your bird already has a screaming problem, take your bird for a thorough check up at the veterinarian's office. An unhappy bird is often unhealthy. Also address husbandry issues that can contribute to an irritable bird. Consider whether the cage is spacious enough and his diet is healthy and balanced. If he sits near a window there may be something outside that contributes to his screaming. If so, close the curtains and be sure he can’t reach them or relocate the cage. Be sure the cage offers him social interaction. If the cage is out of the way he may be screaming to locate other members of the family. 

Plan daily activities that mimic natural healthy behavior such as hiding food treats in paper cups or toilet tissue rolls. Give him natural branches and occupational toys. Also add a daily shower to his late morning or early afternoon routine. Consider installing a full spectrum light if your bird does not have safe access to natural sunlight. Sun through a window is incomplete light for a bird.

When you are sure he is healthy and has outlets for play and chewing begin your retraining program. First, run into his room when he is quiet and make a big fuss over all appropriate play. Completely ignore the screaming. If the screaming is attention seeking behavior, this will remedy the situation greatly.