I have 13, 10-12 week old red sex link pullets and one cockeral that are established in our coop. I accidentally bought 3 teeny tiny banties today at the sale barn. I absolutely couldn't help myself, they are SOOOOO cute! So here's my dilemma...are they going to give my other chickens any diseases???? I have them on medicated feed and I am giving them so terramyacin just in case. I am going to fix up a brooder out in the coop that is kept from the bigger ones but I am so afraid that one set might kill the other set from some kind of crazy disease. Is this a valid worry? I am obviously new to chickens but LOVING IT!!!!!!!!