I have a leghorn rooster whose wattles got swollen from frostbite. He has been in the house for 3 days , he can't pick his head up & the swelling doesn't seem to have gone down. I'm hand feeding him watery mushed food with dried mealworms, sunflower seeds & feather fixer for protein. I've also given him yogurt, scrambled eggs & oatmeal. He wants to eat & is drinking, but not on his own. He does seem a tiny bit better today . What can I do for him, or do I put him out of his misery.?