FeatherstoneFrm
Songster
I can't say for sure what did this but I have a black Australorp that had a similar wound from a raccoon last year. I crated her with her bestie at night in the house until I was able to move and better secure the coop and run. She healed nicely and is 2 yrs. old now but doesn't lay but 2-3 eggs a month. She seems healthy and happy.
I hope yours will heal as well.
I hope yours will heal as well.