What foods can you put in your Blue and Gold Macaw's diet to make it scream less?

Lots of love, attention, a structured day - same time for playtime and attention every day, same bed time every night, etc. Lots of toys and rotate the toys every few weeks to keep the bird from being bored. Macaws are like a feathered two year old, they need lots of love, stuff to do, structure, attention, interaction. My blue and gold loves to watch tv - you can try this or put a radio in the room and play music too.