Thanks for the help, I know I don't have much to go on. This morning two of the 3 I isolated look the same, lethargic, feathers puffed, not really interested in food or water, the other looks ok. I wasn't sure that one was sick but I isolated it anyways. Their poops, eye colour, feet colour all look normal to me. By big flock, I meant flock of youngsters. I had 13 four week old birds of several breeds arrive from the breeder (two days in the mail from Arkansas to Oregon), and I added them to 15 youngsters of the same age that I had hatched out myself. They are in my main coop but separated from the grown chickens. I have been feeding them meat bird feed as there are many roos in the bunch that I plan on butchering if I can't find homes for them. The breeder did feed them chick starter prior to arrival and I fed the ones I hatched chick starter from hatch till four weeks when I moved them out of the brooder into the outside coop. I have also been feeding them lots of fresh kale from my garden, cucumbers and squash which they love. Any thoughts on an impacted crop? They have free choice grit in their pen. Their crops do not feel especially hard this morning. I made a mixture of hard boiled egg, olive oil, yogurt, honey, grated apple and carrot and rolled oats to see if they would eat that this morning. Only the seemingly healthy one is eating it.............. The breeder had a very poor hatch rate and I only ended up getting 8 of the french black copper maran chicks so I will be sad if I lose some but I know it is limiting what we can do. I will look into the symptoms of coccidosis just in case.