I have a flock of 19 - 2 of my youngest cochin pullets which are both 9 weeks have been exhibiting odd behavior for the last week. They seem lethargic, they always have their eyes closed, or one eye open and the other closed. They only open both of their eyes at the same time if they are startled. The comb on my splash pullet is colorless and almost looks transparent. They are eating and drinking, they have fresh veggies for snacks about 3 times a weeks. I just don't know what is wrong with my girls...They are eating non-medicated chick starter. Should I put them on antibiotics? If so, what kind should I give them? I am a newbie, so here I am doing a first time thing again... Thanks!