My daughter works in dermatology.  Don't use peroxide.  It kills healthy tissue. 
Chickens can heal from some nasty wounds.  Clean it with sterile water, you can put some neosporin on it, the kind without the numbing agent, or just get some wound spray from the farm store.  I've used a product called WonderDust on scalp wounds before.  It scabs it up (will turn black) and will keep it from getting infected and full of flies.  It will heal, will just take time.
As far as Marble goes, it shows up on google maps as Marble, just east of Huntsville on Hwy 412.  I searched for this Haskins you mentioned and can't find it.  Unless they rebuilt the auction place, I don't see how Marble can hold 400 people.  It's a small place, right on the highway.  No way it holds that many people.  I think they have auctions every Saturday.  I only went once a couple of years ago.l
Where is this Haskins?  Is that the city name or auction house name?  I may be interested in that one.