Below is the picture of my hen that was scalped. I don't have a picture of when it happened, but her skull was visible. This picture was about 5 or 6 weeks after it happened, feathers just starting to come in. The scab was very thick when it healed over and gradually came off from the edges in. I flushed it out well initially and kept it covered in plain triple antibiotic ointment until it was completely scabbed over, and kept her crated in the run until it was no longer at risk of being pecked by others. Once the feathers were fully in, you could not tell anything had happened, she looked completely normal.
I will attach a link that has some pictures of other wounds healing, for reference of what they can look like also.
https://www.backyardchickens.com/threads/wounds-pictures-of-how-they-heal.1325817/#post-21627607
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