When I worked on it,it was really hard and didn't "crumble" much once I got started. It's hard to the touch and squeeze. Sprayed with peroxide first. I decided that I was not getting very far with the big part, so I tried picking a little bit of the piece on the side that was sticking up a little. Started bleeding so I stopped. And previously when I was still working on the bigger one, it started separating from the skin and she was very uncomfortable. I greased her up with Neosporin (pictures taken after Neosporin) and put her back in the coop.
This area is 3 cm wide and 2.5 cm long.