We had 4 chickens since they were 3 weeks old. One finally started crowing so we had to get rid of him We were all sad to see him go! We wanted to add a new hen to our flock and found one we like but she is 1yr old. Will introducing an older 1yr old hen to a 3 5 month old hens pose any issues? Will the older new hen be mean? Just wanted to make sure it was ok since most people add younger hens to their existing flock. Appreciate it!