Hi everyone, this is my first time posting although I've read through many previous posts and am a big fan. I'm a first time chicken owner and am having a problem with my Buff Orpington. Here's what's happened: Three days ago I came home in the afternoon and noticed that my 6.5 month Cuckoo Marans looked very very sick. She looked so sick, I wasn't sure she was going to make through to the next day. I didn't know what the problem was so I brought her in the house for the night and let her sleep inside a large dog carrier by herself. She was just very lethargic and I noticed her feathers didn't look right. She didn't want to eat or drink and had a hard time keeping her eyes open. Then she stepped up into my lap and tried to fall asleep (before I moved her into the dog carrier.) I looked for wounds and couldn't find any, but it's hard to move all her feathers out of the way to see. There were no signs of predators so I thought she was sick and that the other chickens maybe were picking at her. By the next morning, she looked much better and seems to be normal now. I kept her isolated from the other chickens for 2 days so I could watch her. Yesterday I put her back in the coop and was sitting with my chickens when I noticed my Buff starting to really pull hard on the Marans feathers around her neck. Really hard! Like she was pulling at food. That's when I realized it was potentially my Orpington who had been picking on the Marans throughout that day and causing her to feel tired and sick. So I removed the Marans again and brought her back inside yesterday. I let them be together in the coop and in my backyard again today while I watched and they were fine for awhile. Then I noticed the Orpington pulling at the Marans again and then turning to pull at my Americauna's feathers around her head. These chickens have been together since they hatched. I have four total including a Dominique and an Americauna. I drove up to Ideal Chickens Hatchery and picked them up back in April. The Dominique is the "head hen" but doesn't display aggression like my Orpington does. This behavior is fairly new though. I noticed that she tends to yank on the Dominique's comb sometimes but then will stop. They always have plenty of Laying Ration and clean water and I bring vegetable and fruit snacks at least once a day. They are all the exact same age - 6.5 months. The Orpington started to lay eggs about 2 weeks ago and has laid 3 now. The Dominique is the only other layer so far. Other factors about them - they have a very secure but smallish coop - about 10 feet by 8 feet. I let them out in my yard when I'm home for an hour or two and watching them about 3 or 4 times a week. I live in a predator rich area so I don't feel comfortable letting them out when I'm not home. They've definitely been more active and loud since it's finally started to cool off and they've started to lay. (I'm in Central Texas and they lived through a very hot summer!) My Buff has a pretty jealous personality. She wants to be held constantly and pushes the other chickens out of the way if I'm hand feeding them treats. She also drinks a ton of water all the time. Her poop is watery a lot of the time and I was thinking it was because she drinks so much liquid. Today when they were in the yard together and taking a dirt bath, the Orpington leaned over and pulled at feathers of anyone she could get to. Then she stopped and went back to her bath. I'm trying to figure out if she's feeling sick and that's making her mean lately. Or whether she's stressed, or hungry or . . . . I don't know. Maybe she's just mean. I thought Orpingtons were supposed to be sweet chickens though. I'm going to try to post a picture of the coop too. I really love all my chickens and I'm surprised that this one is acting this way now. Now I have the Orpington in the house and the Marans out with the others. I don't feel like I can leave her alone with the other three now. Does anyone have any ideas? Will I ever be able to let her live with the others again? I have another shed I can do some work on to make it into a safe coop for her. I was thinking of maybe separating her permanently and putting her with an Orpington rooster out there and letting her try to pick on him. Thanks for any feedback! P.S. Not sure how to post the pic of my coop. It's that Garden Coop plan I saw online. Lots of air and secured with Hardware cloth on all sides besides the the upstairs box. Just wondering if it's not enough space for them and if that's causing the problem.