my rooster jumped down from his roost today but must have landed wrong. ever since then he's been hanging his head low in obvious pain, and can't hold his head up for very long. i've felt along his neck and wing areas, but nothing seems to be out of place. could he have sprained his neck muscles somehow? we have no chicken vet in my area(they have NO clue how to help chickens at all). this is the first time i've ever had this happen to one of my chickens, and i don't know if once a chicken experiences a neck injury, if it's permanent and they have to be put down. also, any advice on any kind of pain relievers would be a welcome!