I have a 6yo white leghorn rooster(Pinky) who has been acting strange the last 2 days. After he eats he acts like he is dehydrated and will not stop drinking water. He drinks so much that some of his food comes back up with lots of what looks like saliva. His comb and wattles also look shrunk and the back of his comb looks frost bitten which is next to impossible seeing as how it is not cold here. His eyes are normal and he runs to the food I put out for him, but the rest of the day he just walks around slowly, a little less perky than he usually is. He has never been sick before. Anyone have an idea what might be causing this? I would really like to save him if possible.