2 days ago my little fella didn't join in with me while I cleaned the coop. Normally he is right there making a mess of my pile of rubbish and getting in the way of the brush and pan. I thought nothing of it as he was having a nap. Then yesterday he didn't help either and was walking into things and not managing to hit the feeder while eating. I picked him up and took him outside and saw that his pupils were still dilated in the daylight. He is a skittish leghorn and always jumped a bit when I moved my hands near his face, now he does not even flinch when I go near him His eyes are bright, look nothing like the marek's pictures I have seen on BYC, the pupils are just fixed. He has been sneezing a bit lately, no runny nose or eyes or any kind of gunk on his face, breathes as normal as I can imagine a chicken does and no gasping, gurgling or anything. His appetite is still good, I have put a larger feeder in with him so it is easier for him to eat, and he finds the waterer. Any ideas here?? Thanks in advance!