Hi everyone -- this is my first post. I've had chickens for two years, with the most-recent version of the flock being an Americauna rooster, one Americauna hen, and three New Hampshire Reds, all about a year old. I recently tried to add four new 3-month-old pullets, two Brahmas and two Australorps. I introduced them to the established flock by keeping them in a dog X-pen for several days, leaving the X-pen inside the chicken run so everyone could see the new chickens and get used to them. After about 5 days I opened the X-pen at night so they'd go through the night roosting together, as I'd read that's a good way to introduce them. For a couple of days all was well although I noticed that my biggest and highest-on-the-pecking-order New Hamp seemed kind of fixated on the Brahmas and would chase them around pecking at them. I thought this was part of everyone determining her place in the pecking order. Well, one day when I got home from work I went to check on them and one of the Brahmas was dead with her poor head a pulpy, pecked mess. On the advice of the breeder, I put the aggressive New Hamp in the X-pen for several days, thinking this would reduce her status in the flock. During the day everyone got to free range together, and I observed no problems. Well, I guess you can figure out what's coming -- another dead Brahma. I'd had it by then and took the N.H. off to my friend's barn so her ranch hand could take her home and turn her into caldo (Spanish for soup). My friend decided this hen was so pretty and plump that she'd "rehabilitate" her by introducing her to her flock of about 20 birds -- her thinking was that since she has a larger space there'd be less tension. Within an hour she was screaming for her ranch hand to "get this psycho chicken out of here" -- apparently the New Hamp had puffed up her chest and was going after my friend's chickens with what my friend thought was intent to kill. At least I still have the Australorps, who for some reason the N.H. didn't go after. The Brahmas were white -- I wonder if this had anything to do with her obsession with them? Anyway, all is peaceful in the flock now that this hen is gone, but I'm very sad for my poor little Brahmas, who were very sweet. The breeder says she's never had anything like this happen. Anyone else had any murderous chickens? -- Liza L.