ok. To start off, when this happened I was new to chickens so whatever huge mistakes I made then, I’m aware of now. About 6 months ago I looked at my silkie flock and saw a hen with plugged nostrils. Their pen is dusty so I thought I’d just take them out. So I took some tweezers and tried to pull it (probably should not have not). It started bleeding so I put some hydrogen peroxide on it. However, a bit later I found that her nose was a lot worse so I separated her and put hyrgogen peroxide on it. Everything went downhill from there. It looked like it spread? Her nostrils became huge and plugged terribly, her eyes became bubbly and whatever was in her nose spread to her mouth. I gave her antibiotics and put Vet RX on her nose but it didn’t get better. She was still very alert and ate and drank fine. I stopped giving antibiotics and just took care of her. I tried a small period where I have her denaguard and that didn’t work. I was told her symptoms sounded like canker however I never saw any of my other birds get this so I didn’t want to give up on her. 6 months later, I moved her to a new pen and within a week she was perfect! Nothing on her what so ever. She even started laying which had not happened for that whole half a year. It’s been a good month or more since she got better so my question is what was it? And is it safe to put her back with her pen? I’d imagine she was lonely without her roo and I’d love to put her back however I don’t want to risk my other birds getting sick. Does anyone have any ideas?