We have 2 chicks (7 or 8 days old) set up in a rubbermaid bin with a light. They have been perfectly happy as long as they're together. We brought 4 brand new chicks home today and now one of the older ones keeps squawking and trying to fly out. We also just changed their feeder and waterer out for larger ones. What do you think is going on? We regularly hold the older chicks and give them treats. I've done that several times today, but each time I put them back with the new chicks, the older one seems upset.