Coming back to update on the duck, the wound on his back is a lot better now that I have looked at the pictures I took when he first got them, but now it is mostly one black scab that hasn't really changed since. His tail is the same, just one main scab (black colored as well) that hasn't really changed.
Firefly (the duck) is fine and healthy as normal, though I have noticed with his back that after not putting on the antiseptic spray for I think it was two days, you could really smell it without having to get too close to the wound. It isn't a strong smell, and the wound hasn't gotten worse, (as far as I can see) and when I put more antiseptic on the smell went down. I didn't put it on yesterday, and I noticed the smell was back today. I don't know if that should be worrying or not.
As far as I know, his tail doesn't have the same problem. On his neck it appeared that just a patch of feathers was pulled out, but is totally covered by other feathers, and the former puncture wound I mentioned turned out to be just one or two broken and bloody pin feathers, since I searched and searched and found no wound. The one on his wing is just missing feathers.
I'll keep putting on antiseptic...Though I came back to ask if there was a type of cream or topical solution that you guys could recommend if you think that would help him heal faster.
Thank you. I'll see if I can get pictures (at least of his back)...though he's in a nippy mood right now and it's hard to get them by myself without getting bitten.