Hi all! I have 4 hens (2 Australorps and 2 RI Reds) that are laying and just over a year old now. It's just been the 4 of them. My husband got me 7 chicks (3 Wyandottes and 4 Isbars) for Mother's Day. They are about 2/3 months old now. 3 are for sure roos and won't be sticking around. I had them in the brooder until they got too big and then incorporated them into the coop with a barrier between them and the hens. Everything seemed to be going well. They'd look at each other but not show signs of aggression. They are all together now and all free range. 3 of my older hens don't care about them at all and have continued on their daily routine. The chicks don't travel far from the coop so the hens don't really hang out with them but they don't seem to mind them. However, one of my older hens, a lorp, is super aggressive to the chicks. The chicks and hens are all in the coop together, but the chicks are now forced to hide in a small cubby when ever she's in the coop with them, aka every night. The other hens just roost and pay them no mind but this one will peck at them, chase them, stand in the door so they can't come in, stand in the door so they can't get out and then attack them, etc. The chicks sprint out every morning when she leaves to get food and water as quickly as possible. Tonight I had to scare the hen off until the chicks were tucked in. She doesn't roost with the other hens either, she sits in one of the empty nest boxes all night. I'm not sure what to do or what the issue is here. Eventually the chicks will be big enough to stand up for themselves but that's not a quick thing. They've also showed interest in roosting but the roost is too tall. I'd make a shorter one but I'm worried about what the hen will do to them. Has anyone else had just one prior chicken have issues with new ones?