Wits End. Hens getting bare and scabby.

[billmac]

My hens are eating fine, seem lively, and are laying the best they have in a long time. 11 eggs from 13 hens.

But around half of them are losing feathers right down to the skin. Neck, breast, legs, around the vent. It varies. I can't see anything on them, but the skin is bright red in spots and their breasts look a bit scabby.

I've dusted them twice with poultry dust, the first about 3 weeks ago and the second a few nights ago.

It must be a parasite of some kind, correct? Something evidently invisible and immune to poultry dust. Unless I'm just not giving it enough time, but the skin is so bright red I feel like whatever is irritating them must be still in business.

Any ideas?

Thanks

 

[chickenzoo]

You might want to worm them w/ Ivomectrian. It kills worms and many parasites, but you will have to throw out eggs for 30 days.

 

[Sjisty]

Eprinex works beautifully and you don't have to throw away the eggs.

 

[billmac]

How do you administer eprinex? A quick look shows injectable, pourable, or put into the water. (I like the last option best).

Does TS carry eprinex?