My 5 month pullet almost always has her left eye closed. She opens it only to movement or loud noises. At first, I thought it was because our older hen had pecked her eye as there seems to be a scab on it, could this 'scab' be causing her discomfort? She has no pus or discharge coming from the eye and it is not swollen either. I was watching her today and she had light brown diarrhea. She is drinking a lot and pecking around but sometimes just stands there with only one eye open. She is still roosting fine. I'm not sure if this is related but she does have 'scabs' ( I'm not sure what they are) on her wattle and a little bit on the tips of her comb. Her comb is also a lighter colour than it normally is. Our other pullet, 5 months as well, also has these 'scabs' (without the closed eye and is more active than the other one) but our 2 year old hen does not (she is isolated at the moment and has been for 4 days). What could be wrong??