we have a rhode island red rooster, since the freezing cold temps here in Georgia, we noticed he has health issues. They do free range, but we kept them in there coop. He might not have been in there though if he was hiding in the cow barn. His neck seems swollen and he cant lean down to eat , it seems to be pinched , his feet are a redish color, and his eyes are a yellowish color and his wattles are really puffy and lackened on the edges. Could he have had an encounter with a predator and gotten injured? Or maybe got frost bitten? What can we do?