On-the-mend-hen won't leave the 'hospital?'

[Maeschak]

I have a hen that I found limping and hiding a few days ago... I placed her in a large cage/metal dog crate and found that she had something horrendous happen to her side which was hiding under her wing. I still can't tell actually what happened to her but the wounds were such that I just provided supportive care of just keeping her warm, dry, fed, and safe from the other chickens.
She seems to be recovering- she can walk well, was preening herself, drinking, stretching, etc- stuff she could not do before bc of the huge gashes down her side. Anyway, I have been leaving the cage door open so that she can exit when she is ready to rejoin the world but she seems to have zero interest in leaving the cage. Anyone know why?
I should say that I live on a farm and the 'accommodations' are pretty stinky and dirty for my chickens but they get out of their barn-coop every day all day until dusk. Could she just be enjoying the nicer accommodations?
Any insight helps- thanks!

 

[azygous]

Your hen is still feeling vulnerable from her injuries. She instinctively understands that the flock will be hard on her should she return before she is no longer showing signs of being injured.

Chickens will often try to drive off an injured or sick chicken among them. Recently I had a sick hen and she resided in the garage in a crate for over a week. I then placed her in an outdoor safe pen during the day inside the run so she could begin reintegrating.

One evening she got out of the pen before I could bring her back indoors to her crate, ran into the coop and settled on a perch. I was doing something in another area of the run when I heard a loud commotion, banging, thumping, screeching and squawking. The flock had knocked her off the perch and chased her out of the coop. I scooped her up and rescued her from the angry hoard. It was too soon to let her go back into the flock. She welcomed being returned to the security of her crate.

 

[coach723]

If you have a rooster, or roosters, that is possibly the cause of the injury. Rough roosters or those with long, sharp spurs and claws can cause injury like that under the wings.

 

[Maeschak]

If you have a rooster, or roosters, that is possibly the cause of the injury. Rough roosters or those with long, sharp spurs and claws can cause injury like that under the wings.

I thought so too and re-checked their Spurs. Both roosters only have weird nubs for Spurs on their right legs (which is the side of the injury). It certainly looks like two dull blades ripped down the side of the hen in just the right spot...perhaps it was some claws. Ive also lost several hens to predators recently and they have been torn open on their sides in a similar area... So who knows.
Luckily I have a batch of chicks I incubated to try to find a replacement rooster for a young knobby-kneed beta rooster I have. He could be the culprit- using his toenails to get her under his control for mating as opposed to his nubby spur.
Thanks for the input- I didn't consider a roosters claws, just his Spurs. (And I have no idea why auto-correct is sure Spurs should be capitalized but I'm tired of correcting it!)