Not sure if this is the right spot to put this - I have 2 chickens, both 8 month old - a barred rock hen and an Easter egger roo. I am being given 6 chicks next week and wondering when I can put them with the older chickens? I know the rule of thumb is when they are similar in size but was wondering since it's more chicks than adult if it could be sooner. And also any tips on how to merge them would be great. Thanks in advance.