I had only 1 chick survive hatching unfortunately. she is now 2 weeks old and was just moved to the big brooder out in the coop. I want to get some companions for her while she grows. What is my safest bet for age range? are 4 week old chicks to old? I want to know the Age range before i go and pick some up. I DO NOT want her bullied that is my biggest fear! Any advice is greatly appreciated!