He seems to have some sort of respiratory problem, and even though I'm not new to chickens, I haven't heard this in any of the other chickens I have owned. Everyone else seems to be fine. I saw on one post about sneezing but it was more geared towards dust in feed. I suppose he needs some sort of meds, or is there something natural? Also, what are the herbs in feed for and what kind of quantities and types do I use if needed.