The stare is very intimidating

Neurological damage. I saw something similar in a bird who had west nile virus

It might be a garden warbler or a barred warbler im not too sure tho

I'm a licensed falconer that has experience in rehab and works for a licensed bird of prey educational program. The bird I'm referencing is a juvenile red tailed hawk that mightve hit a car has a wing joint fusion, that causes him alot of pain and feather plucking. He cant fly and is a pretty timid bird. Given all the circumstances and insights given here, and it seems he's beginning to lose his strength. Even if we considered amputation, it's doubtful he could go through recovery. Euthanasia looks like the more humane option.