Hi BYC people I have hens that are 1 yr old. I'm getting two more hens tomorrow and I just wanted to know how to introduce them to my flock. I was going to put all the chickens outside on the grass altogether but I'm scared of what will happen. Should I put up a guard rail from mine to the other two? We have no clue if these chickens have any diseases or mites/lice. I forgot to mention that these other chickens are said to be a year old too. Please help I'm picking up these chickens tomorrow at 11:30am. Thanks guys