That definatly looks like rooster damage. It could be he is inexperienced and not very practiced in mating.
Also if I'm reading it correctly you have 3 hens to 1 male? That's just not enough. I would at least double the amount of hens in not triple.
A saddle will be helpful as she heals and to protect her and the others in the future. I agree with clipping or covering his spurs.
I've included a link to a thread following my journey of a hen with a rooster wound.
https://www.backyardchickens.com/threads/yikes-large-wound-on-hen.1141144/
Also if I'm reading it correctly you have 3 hens to 1 male? That's just not enough. I would at least double the amount of hens in not triple.
A saddle will be helpful as she heals and to protect her and the others in the future. I agree with clipping or covering his spurs.
I've included a link to a thread following my journey of a hen with a rooster wound.
https://www.backyardchickens.com/threads/yikes-large-wound-on-hen.1141144/