We "processed" three chickens this morning (too many roosters). After letting them bleed out for a few hours, we were working on skinning them, and I saw what I thought were mites (about .75 cm long, flesh colored, with dark-colored abdomens). I thought we had mites, and I would have to take care of it, but later that afternoon, I had a chance to check two of my hens, and they did not have this parasite (that I could find). Would the fact that it was on just the roosters...??? Noooo. I figured just to be safe, I'd treat them. I was reading up on what to treat them with and came across a site for Ivomec/Eprinex - anyone ever heard of this?? Here is the site I found: http://shilala.homestead.com/ivomec.html We have 23 chickens (now) with plenty of room for them, so overcrowding isn't an issue. Thanks much for any replies!!