I'm slightly worried. I got two 1 week old barnevelder chicks recently. They're perfectly healthy and doing fine together in the brooder. My city allows a max of four hens per property, and I also want to get two ameraucana chicks in addition to the barnevelders. My problem is that the farm and garden center I get chicks from will get more ameraucanas on the 28th, which is in two weeks...I would be raising two 3 week old chicks with two 1 week old chicks. I'm really unsure about how that will work...I'm afraid the older chicks will be aggressive to the new ones. What should I do? Should I just find another source for ameraucana chicks that will have them sooner?