We just lost one of our chickens if we can replace her 6-7 weeks old can we just put her in with the other 3 same age or because she new do we need to set up a cadge they can see her and get use to her first then put her in with the rest. Not sure if that needs to be done or not considering they will be the same age (if we can find one someone is willing to sale) or would we be better off waiting till next year and get 2 new chicks to add to our group?