I'll start by saying I only have experience with one Barred Rock, and maybe all the others are fantastic, but this one bird has been so awful she's completely ruined the entire breed for me. She is merciless about setting the pecking order, to the point where it becomes pointless bullying. I have my 10 week old d'Anvers in a sectioned off pen for introduction, and I can't even set up a little perch for them because she will attack it and knock them all down. She scoops food out onto the ground then digs it into the dirt, wasting it. She eats double what the other standard chicken does. If I've given them all treats she'll alternate between stuffing her face and prowling around the d'Anvers' pen, trying to attack them through the wire for daring to eat. She's disgusting, always pooping all over herself and generally just having extremely poor hygiene. She doesn't even like human attention. She'll come running if she sees me, but her interest is purely food motivated and if I try to pet her she will "bwwak" angrily and side-step away. Then to top it all off, if I crouch down in the chicken pen she will come over and peck at me.