My 6 months old rooster is very very lethargic his eyes are closed. I separated him from the rest gave him some scramble for about a few seconds he gets up eat like crazy and then stops and falls a sleep again. For time to time he drinks lots of water and goes sleep again. His back is a little dirty for about 5 days but now he is only pooping water. Other hens of my flock had presented this in the past and none recover. He is been deworm regularly for both coccidia and other type of worms.