I just got 6 young silkies the other day!!! 4 of them are 4 week old lil ones and 2 are about 10 weeks old or so. Since they are the same size/age as my other young chickens, I put them in the run together to see how they would get along. At first they were great and were all eating together, then one of the silkies started attacking my other chickens. Jumping at them with it's claws and grabbing them by the neck ripping out feathers. I grabbed the silkie and took it out of the run, then my other chickens started attacking the other silkie, so I had to take it out as well. Is this normal behavior? I'm sure like horses, they have to build their pecking order, but I was concerned they were gonna really hurt each other. Later, I put in the lil baby chicks with my other chickens but stood right there just incase and one of my chickens (EE) flew at the chicks with it's neck feathers sprauled out like one of those lizards, so out came the chicks immediately. I've never seen my other chickens act aggressively before other than lil pecks on their heads, but on the other hand, theyve been together since little chicks. Any suggestions? I didn't really plan on leaving the lil one out in the coop until they are older, but what should I do about the bigger ones? They are fine with the lil ones as they were raised together, but the bigger ones really need to move out into the coop with the rest of them.