i have two green cheecks,"sassy and Newton". i somehow inherited a green quaker named "Mr. Bigs". Well the birds are extremely jealous of one another. Mr biggs screeches and they go flying on his cage. The female wants to fight him and im worried they will hurt each other. one day the newton came over and picked a fight, he is much smaller. i need any suggestions that will help them like to be together. I want to consolidate there area. how can you make different species get a long?Any help?