I am not sure what to do at this point. This is long winded so bear with me! My Marans roo, who would have been 1-year-old the first week in March, began to get lethargic last Sunday. He wasn't mingling with the others as usual and he was just sitting, dozing under the shelter my husband built for the chickens when they are out of the coop. That evening, he went into the coop with the others as usual. On Monday, I did get time to glance out into the yard and saw King Louis out with the others by the woods, so I was hoping he was getting better. Tuesday around noon, I noticed my flock wasn't outdoors as usual so I went out there. It was snowing, but the chickens usually want to be outside, at least under the shelter. King Louis (the sick Marans) was in the loft resting on his side. I picked him up and took him indoors to check him over. I bathed him and noticed he had a bad case of mites. I felt he was too sick to dust at this point, so I just lathered his skin with olive oil. He had mint green diarrhea. I fed him yogurt and hard boiled egg which he did eat. He was also lame on his left leg. I called around for some Sulmet for coccidiosis which may be from mites with no success, and tried to talk to "chicken experts." Everyone seems to think chickens are disposable, "and this stuff happens." I called my vet who wanted to charge $70 just for an exam which we totally couldn't afford. I set King Louis up by the fire and gave him some sugar water, but he passed away the next morning. I took King Louis's poop to my clinic, but I didn't see anything. I talked to my large animal veterinarian instructor, who wasn't any help and didn't understand the attachment to a rooster. She suggested it just may be King Louis, he just was too weak. So, I'm on my own with this one. By Friday, my other roo, Sonny was limping. I dusted each chicken, one by one, with Seven for the mites; cleaned and dusted the coop as well. I didn't notice any mites on the others. All of their tale ends were clean, no evidence of eggs. I thought it was odd. King Louis was literally covered....bunches of mite eggs on his tail end too. Is it normal for mites to attack one chicken out of a flock? I won't let my guard down, I'll watch for them, but I just find it strange. Sonny doesn't seem to be lethargic like King Louis and I did check his feet for bumble foot, which he does not have. As far as isolating him from the flock, by now, all have been exposed in my opinion. I am keeping it as clean as possible out there and I have everything dusted. Do you guy's think it may be coccidiosis from mites? If not coccidiosis, does anyone here have any ideas with what I may be dealing with? Sonny dosen't have diarrhea, but his poop was an odd shade of green....the only symptoms so far he is showing is limping. King Louis, was limping the day before he died. Thanks in advance.