This dominance problem seems a possible answer to my problem. However, I'm not real sure what to do about it ... perhaps the separation treatment will work. I have three hens, no roosters, and it seems to be primarily one hen that is doing the plucking (both of the other hens have rather bare bottoms!). At one point I actually caught her at it and was able to stop it, but I doubt she'll just quit. I am applying "Peck No More" to the backsides of the two victims and it does seem to be slowing the plucking down ... however, I left off for a couple of days when things seemed better and pin feathers were coming in, and the picking began again in earnest. The girls get Laying Crumble (they seem to prefer it over the pellets), oyster shell, a "Hen Scratch" mix (three, or four seeds plus cracked corn) and I also add flax and safflower seeds to their diet (for the Omega 3 fatty acids) we also supplement them with kitchen scraps, including the occasional bits of meat (though not chicken!). They have a rather large enclosure set on bare ground and I let them out daily to scratch about and eat bugs and grass and "Miner's lettuce", but I can't leave them unattended because of the large number of local predators. On days when I can't let them out for more than the time it takes to clean their pen and collect eggs, I collect several handfuls of grass and miner's lettuce for them. Other than trying to separate the offender, I am at a loss.
One other question and perhaps this belongs in a different section ... but, will a chicken die from eating something like a salamander, or newt ... I know both of these creatures are toxic to any number of mammals, and even some snakes, but one of my chickens got hold of a salamander, while out scratching around. I was able to get it away from her, but it was not intact ... I don't know if she ate it, but she has shown NO ill effects. Anyone know if they're immune to these amphibians' poisons?