I just got 10(5 for me and 5 for my daughter) 2 day old Isa brown pullets from TSC. One of them is really mean and picking on all the others. I have them in 2 different tubs they each have their own food, water and heat lamp. But one of them continues to pick at the top of the others beak. So much so that they are now red. What can I do? I have separated it in a 2 gal bucket inside their tub until I find what to do.