One of our roughly 10-week-old chicks is much smaller than the others (though this whole batch varies widely in size). One of its eyes is watery and often closed, like it's infected or something. It's not "goopy," just watery, and the eyeball itself looks pretty normal. It's been like this for a couple weeks, not getting better or worse. I gave all of them several good doses of cayenne pepper for coccidia, but it's not catching up to the others. Any ideas? are they related or separate issues?