Hello! I have a squirrel coming to my bird feeder that has a bad injury to the side of his head. It may be an infection - I don't know. Please see pictures below. He has some grass or debris stuck in it. In some pics it looks like his left eye is visible but from what I can see in person the injury / swelling covers his entire left eye. He acts normal and I've been feeding him walnuts to help him get enough food. I first saw him about 3-4 days ago.
I would appreciate any advice as to how I can help him more, or if I should just let nature take it's course. I will try calling local animal rehabbers but I've been a bit disappointed with the ones in my area in the past when contacting them about injured birds I found. They either didn't call back or one (a vet) I'm pretty certain just euthanized the bird. She refused to give me any updates on the bird. It was or a pigeon w/a broken leg (or) maybe just gave birth and had calcium issue (I read this can happen.) Would have been nice to know how it turned out. Anyway! Thank you for any advice anyone can provide!
~Rita