Hi, My chicks are dying showing following symptoms 1-Lethargy 2-Head below eyes swollen 3-Thick Sticky Mucus in Beak (Flowing in some chicks and just there in some) 4-Poop Condition (i could only watch very old hen pooping) Crystal Clear Water with dark green substance in it I have lost 12 8 weeks old chicks, 4 18 weeks old chicks, 1 7 weeks old chick, 1 under 2 years old hen and 1 very old hen. I have been giving them OTC in water and 1 500 mg capsule to individual birds (4 18 weeks old chicks and 1 very old hen) but to no vail. They all free range under trees with no grass. I vaccinated them all against New Castle Disease two months ago. All chicks were home hatched under their broody mother hens and were with their mothers Can anyone tell me what disease they are suffering from.....?