From the appearance it looks like a hawk got on her and was eating her. Not only is skin and feather missing but it appears there is muscle damage as well. I know about everyone here on this forum is all about "saving" every animal, and I understand... it's hard to let them go. From looking closely at the picture, you can see what appears to be hollow areas that have been eaten out on either side of the backbone just above the tail. That is the area of the kidneys. When you're cleaning out the underside of a chicken leg prior to cooking, this is all that red stuff you scrape out right along the backbone portion of that chicken leg.
If this is indeed the case, then IMHO you will not be able to save this hen. I'm sorry, but even if the area wasn't completely destroyed (eaten), there has been internal damage done, contamination, and if by some miricale she does survive, her life will be less than ideal.
That being said, should you make the decision to try and save her/keep her alive:
You need to keep the wound area moist. You can use a saline solution for rinsing/cleaning. You can also apply a Neosporin or generic triple antibiotic ointment and cover loosely with non stick gauze.
DO NOT USE BLUKOTE on a wound that size! please! Blukote is for cuts, scratches, minor wounds to block the red color of blood to keep other chickens from pecking at it staunch MINOR blood flow and help healing. And it HURTS on deeper/larger cuts/wounds. If you doubt this, next time you open yourself up, try some on you.
DO NOT continue to use peroxide on the wound as it is indiscriminate and kills new developing/healing tissue as well as disinfecting. It will hinder healing.
I have recommended the following before and have used it myself with great success. It is sold at TSC and you can order it online. It is collagen based and promotes new skin growth. It's called EMT gel. It is very thick and sticky, so apply gently but firmly.
https://hymed.com/products/emt-gel-spray
I'm sorry but I do not think she'll recover. If she does this will NOT be a short road for either of you. Please post updates n your decisions and progress. Thank you and I hope the remainder of your holiday season is substantially better.
If this is indeed the case, then IMHO you will not be able to save this hen. I'm sorry, but even if the area wasn't completely destroyed (eaten), there has been internal damage done, contamination, and if by some miricale she does survive, her life will be less than ideal.
That being said, should you make the decision to try and save her/keep her alive:
You need to keep the wound area moist. You can use a saline solution for rinsing/cleaning. You can also apply a Neosporin or generic triple antibiotic ointment and cover loosely with non stick gauze.
DO NOT USE BLUKOTE on a wound that size! please! Blukote is for cuts, scratches, minor wounds to block the red color of blood to keep other chickens from pecking at it staunch MINOR blood flow and help healing. And it HURTS on deeper/larger cuts/wounds. If you doubt this, next time you open yourself up, try some on you.
DO NOT continue to use peroxide on the wound as it is indiscriminate and kills new developing/healing tissue as well as disinfecting. It will hinder healing.
I have recommended the following before and have used it myself with great success. It is sold at TSC and you can order it online. It is collagen based and promotes new skin growth. It's called EMT gel. It is very thick and sticky, so apply gently but firmly.
I'm sorry but I do not think she'll recover. If she does this will NOT be a short road for either of you. Please post updates n your decisions and progress. Thank you and I hope the remainder of your holiday season is substantially better.