Wow, I am in a bit of shock right now. My new zebra finch lacy is injured but seems ok otherwise. Last night I came home a bit late and couldn't find her. She is normally sleeping on the perch with her best buddy Jasmin. I looked around and noticed her on the ground tucked in a corner. The lights had been off, and I guess she had a fright and couldn't find her way back. Once the lights came on, everyone jumped up and had a bite to eat....she seemed perfectly fine so I thought nothing of it....
This morning she has been her normal vocal self....active, etc. Just a few minutes ago I noticed her sleeping and thought it was because of their late night snack. However, when I looked close, I thought I saw the back of her neck balding. I take her out of the cage to have a look and I part the feathers....and that's when I had a near heart attack! It looks like a pretty clean slice lifting the skin right off from the base of her body. Doesn't look infected, no fresh blood. It's just bizarre! I started flipping out, wondering what could have happened when my husband pointed out the metal piece holding a calcium block. Sure enough, there is a small piece of flesh on it! That's where they normally sleep....OMG! I feel SO awful....I don't know what to do. She is up and eating, etc....so I think she's ok.
What can I do to prevent infection? Is there something I can put on it?

Thanks so much in advance!!!!