I have a 4 x 8 coop and it is enclosed in a 10x10x6 run...we have hawks so I'm a bit concerned about letting them out all the time in the open yard. We have over an acre. The coop and enclosure is within a very large side yard that is fenced within the acre...there is plenty of room for the 6 girls. The girl that is being pecked is smaller than the rest and there is no blood just a few missing feathers.
I was out there yesterday for a long time watching their behavior and I decided to mist them with a spray bottle if anyone of them tried to peck her. It actually worked......I hope to get out there today and see if they are still doing that or if I need to use the spray bottle of water again. What do you think of that method? I hope it works.
KSChicks,
The most commonly used guideline (not a rule, just a guideline) is a minimum of 4 square feet per chicken in the coop plus an additional 10 square feet per chicken in the run. Most suggest that the more space you can afford to give them, the better. More space usually translates into less problems and more flexibility as the flock numbers and dynamics change.
If I understand your set up correctly, your coop is inside your run. So, your coop is 4x8 or 32 square feet, divided by 6 chickens is 5.3 square feet per chicken. This is just bigger than the 4 feet per chicken coop space minimum guideline. Your run is 10 x 10 so that's 100 square feet but we need to subtract the coop that sits inside the run so 100 minus 32 is 68 or 11.3 square feet per chicken. This is also just bigger than the 10 feet per chicken run minimum space guideline.
Despite your space just exceeding the guideline minimum, I would still suspect this pecking issue is probably due to them not feeling they have enough space and/or the one chicken being picked on can't get away from the others. Every chicken is different and every flock is different. Once they start this pecking at each other behavior, I've heard it's hard to break. So, a few things you can try, some are more work and/or more risk than others. One thing that is easy to do is to make sure you have things for the picked on chicken to run behind and fly up on to get away from the others. If you don't have this already, put maybe a bench in the middle of the run or a few cinder blocks to make a little sort of wall for the one to hide behind. Whatever you have on hand that is sturdy and won't fall over on top of one of them. Just make sure the picked on one can get out of eye sight of the others and that she has space to run and places to hide.
Another thing you could maybe consider is to expand the run space by bumping out one of the ends. Another is to let them free range more in that bigger fenced area. I know it's hawk migration season so this is a risk.
I'm not sure about spraying them with water. I'd have to defer to someone else with experience with this. The upside is they may learn to not peck at each other. The downside is they may associate you with bad things happening and this could cause them to be fearful of you. I just don't know anything about this and how chickens think. I do agree with the prior poster to put Blue Kote on her behind to hide the pink color. I've read that the pinless peepers work well but I think the poster said it well, he tried these as a last resort.
Hope this helps,
Guppy