Pullet got severely injured by another chicken

[Mikkimarie]

Yesterday early morning when we let our chickens out we noticed that one of the chickens decided to bully the crap out of a pullet. We got a couple new ones and have been slowly introducing them. We have had everyone separated but close enough to see for a few weeks and then let them go together for a while now. They have slept in 2 different coops just fine. Same chickens in each coop every night no issues until now.

I am so greatful we got to her when we did. Still don’t know how she’s alive.
But today is day 2 and she is doing great it seems. I am just super worried and I feel for her.
As soon as we discovered her yesterday I brought her inside immediately, checked her over and I didn’t see any gushing or bad bleeding so I soaked her in a warm epson salt bath and used a few drops of dawn in the water. Tried to clean her off the best I could. I used a chicken disinfecting healing spray on it and applied a layer of hen healer on the minor spots not the very intense area you see in the photo. It appears the chicken over pecked the heck out of her bottom. She has one little wound on her head but it’s barely a scratch.
I soaked her again this morning and I am going to apply ointment again once she’s dry. She’s been in my bathroom where it’s warm in a comfy box with food and water.
Her bottom skin is mostly gone, pretty sure we got close to bone but not quite. She has been chirping eating drinking stretching and walking a bit. She rests and sleeps which I assume is normal to heal. She even poops normal which I didn’t expect her to do. My heart is broken. What else can I do for her.? I didn’t even expect her to make it to today. I can’t tell if this just looks worse than it is.? Her tail feathers are almost all gone. Help please.

 

[Eggcessive]

That looks very serious for a pecking wound. Could a hawk, dog, or other predator have done it and then the other hen just was pecking at the red blood? Did the others join in? I would have put that hen in freezer camp or rehomed a chicken that damaged another like that. Are they the same age or size chickens? Pinless peepers would be something I would recommend, but I would at least separate the bully for a week or two.

Spray the wound twice a day with wound spray or saline. Apply plain Neosporin or Hen Healer twice a day after the spray dries. She should eventually heal with the wound filling in, but it will take a few weeks and she will then have to be reintroduced. Keep her away from any flies because of maggots and flystrike. Once her wound is healing, try placing her in a wire dog crate with food and water, with the others around, so they are familiar with her. Then slowly have some supervised visits. Here is some reading about pinless peepers for a bully:
https://www.backyardchickens.com/threads/pros-and-cons-of-pinless-peepers.1629317/

 

[Mikkimarie]

That looks very serious for a pecking wound. Could a hawk, dog, or other predator have done it and then the other hen just was pecking at the red blood? Did the others join in? I would have put that hen in freezer camp or rehomed a chicken that damaged another like that. Are they the same age or size chickens? Pinless peepers would be something I would recommend, but I would at least separate the bully for a week or two.

Spray the wound twice a day with wound spray or saline. Apply plain Neosporin or Hen Healer twice a day after the spray dries. She should eventually heal with the wound filling in, but it will take a few weeks and she will then have to be reintroduced. Keep her away from any flies because of maggots and flystrike. Once her wound is healing, try placing her in a wire dog crate with food and water, with the others around, so they are familiar with her. Then slowly have some supervised visits.

We tried to inspect for other causes but it was only her another pullet and another chicken in the coop together. The coop had some blood but we found no trace of blood outside the coop. That’s why I’m so blown this happened so quickly literally overnight. When we put them away that night before they were all fine and injured. Next morning when let out she was like this. I suppose it’s possible for. A predator but no one else was or is hurt and no blood outside coop.

 

[Lacy Duckwing]

How old is the pullet and how old are the older birds? Looking at the pictures, she almost looks too young to be put in with adult hens. I recommend removing the other pullets as well, as they might go after them too. I've had something similar happen, though on a different spot on the pullet, when I added pullets too young into a an adult flock.
Also, is this flock free ranged or penned? Penned flocks can sometimes be more aggressive to new comers, especially when the new comers can't get away from them. I don't typically recommend hiding spots as it can prolong settling the pecking order as well as causing the new comers to starve depending on the spot, but providing places that they can get away from the originals and eat and drink in a safe place helps protect the new comers.