Wait, you mean you added a chick to a full grown chicken? Bad idea. A full grown bird can and will kill a chick. Always when introducing new birds you must separate them and let them see each other through wire. Introducing chicks , pullets and hens is a catchy thing. There is a thing called pecking order. I have pullets chicks and hens, and am trying to get them all together. We have had them introduce each other through a wire fence, and these last few days all on the lawn . There is still squabbles but it's better each day. It takes time to get two different ages today and chicks with full grown hens is a no no. Unless you want to see a dead chick .
