My Red Stars are now 2 weeks old and there are 2 little ones that dont seem to be growing as fast. 3 of them are getting huge and want to fly in the brooder. All eat and drink about the same and everyone seems happy and healthy. Is it normal to have a couple that just dont keep up and will be smaller? I am feeding medicated chick starter and have been putting electrolytes in the water. They also get a scrap veggie of fruit every other day. Any thoughts?