I Used to have 6 chickens, now only four because the others were roosters, Now I only have 3 hens, So I'm going to get like 6 more, but I don't know when I should, It is august and I live in Michigan. Is it going to be too cold before they get older enough to get out of the house?? I don't know what to do, When should I buy more chicks?????? PLEASE!!! I really Need Help! I am also going to be getting a new coop soon, so I need to know how many chicks I'm gonna need to get.. Please help