Ten weeks ago, I bought two chicks. This week one of them started crowing and we have since discovered that she is actually a he. Roosters are not allowed in our city limits so we will have to find a new home for him. Unfortunately this leaves my hen without any companionship. Since I know chickens are social creatures, I don't want only 1. So we need at least 1 new chicken. I've heard you are supposed to introduce new members into a flock in pairs, but if there is only 1 chicken, does that really apply? Would 1 chicken do fine? Should I worry about ages? I don't really want to start with a chick all over again and would rather get a pullet of about her age. If that's not possible, would an older chicken be fine? Suddenly, my chickens have become very complicated. Any advice would be very helpful. Thanks.