Sammi update: sorry it took all day to get to the computer. Sammi is, I think, getting better - little by little. She clucked a greeting this afternoon when I checked on her. First time since she got hurt! She's less shaky and seems to be steadying a bit. We haven't had to pick any maggots off of her, although we still find one or two every time we clean her cage out, which is 3-4 times daily. The triple antibiotic ointment makes her look kind of pathetic the way it greases her feathers. We're trying to keep the area that she lost the most skin clean and covered with ointment and a wound pad, kind of trying the skin cell regrowth idea from your link, tiki244. I don't think we are getting the method perfectly but we're trying. (hard to wrap the backside of a small chicken)
Overall, we feel pretty encouraged that she'll make it, barring any internal injuries that we can't see or heal. Her right wing tends to hang or droop down some when she's standing. I don't know if something is broken in it or if she is just keeping it off of her wound. It seems like it may be awhile before she's able to join the rest of the ladies outside again. She's really become quite the pet for us. Plus I hope she'll lay at least as many eggs as she is eating
chicksonbikes, I hope Rachel is improving for you! I understand about the reluctance with the vet (as well as the pull to go). I have a much greater understanding for why they cost as much as they do! You would have to pay me A LOT to do for another chicken what I did for Sammi
Check around a bit but it sounds to me like you can cut off the dead skin yourself. Look at the very first post tiki244 put on this thread. It's a pretty thorough article about taking care of an injured site on a chicken.
I'm having my daughter write a journal/summary of her adventure with Sammi. It's been quite a learning experience!
Tiki244 and so many of you others, thank you so much for all the the advice and wisdom and encouragement you have shared with us! It's been very helpful to know we have such support!