Wow, folks, that's interesting info about mites and ivermectin. I'll look again for a mite count when I can. What does it mean to "blow through" the feathers? I just looked at the vent area and saw 1 black mite - quick inspection style.
Currently, I have the Ivermectin in the water (4cc/gal). I figured others could benefit from it too, but I can see how a few drops on the back of the neck would be more certain of treatment....I've been trying to figure out how to treat with it while they have access to other water, such as melting snow. Also, it's ivomec-plus, which includes another drug that treats liver flukes and something else. That's what I had on hand. I've placed an order with Jeffer's Supply for the ivermection regular (it's on sale right now!) Ivermection is also available from vets and from farm supply places.
This is the first time I've had trouble with mites, lice, yes, but not mites. I'll quit using grass hay as bedding I guess. I was trying to save the cost of buying bedding. Until I could get more pine needles and chip my own wood.
I've got ploy-vi-sol iron free to add to water, ACV, and also ordered some probiotics. I can give more molasses covered grain with the other feed. I have DE to spread with new bedding, which I'll pick up tomorrow when I head into town. I want to treat everybody with ivermectin, but that's going to have to wait a few days.
I still have to ask, IF he survives, should I breed him? If not, I need to cull him now rather than going to a lot of trouble. Some of this stuff I'll do anyway, like replacing bedding and treating the other chickens.