A cup or two is too much. Stop daily treats.They (8 birds) get maybe a cup or two of meal worms when I get home from work. Sometimes they get some veggie peelings, carrot or zucchini, maybe twice a week. A random apple every few months. In the summer they get frozen watermelon or berries on super hot days. If molting I might offer a few tablespoons of tuna fish a few times a week.