First of all I'm really happy to have been able to join this group. I've gotten lots of chicken related questions answered because of this group. I'm a stay at home momma, I have 2 children a 6 year old boy and 2 year old girl. We recently decided to add some chicks to the family. I had a four hen flock that we got at 2wks old at the end of February. Around mid April a predator got into our coop and we lost all four. It was devistating for me and the kids even my husband was upset by it and he doesn't usually get attached to pets. So a few days after we went back and got four more chicks australorp breed. Were currently in the process of building a more secure coop. And this brings me to my question we also received eggs that we are hatching that are due on may 16th. The newly hatched chicks will be roughly around 5 weeks younger than the original 4 they are all the same breed. I'm not sure at what point its OK to let them start to mingle and get use to each other so when it's time to get them all in the coop together it won't be a big deal?