I have a rooster really ill. He started with a worm infection, and then after recovery all of the sudden he lost ability to walk. He kept on losing weight, and now he is literally skin and bone. I saw him a while ago, and he seems that he is about to die any moment soon. The area between the chest and the beak is really swollen. What can it be? Is it possible that this concentrated food and water? I don't think that he will make it tonite.