Works great for chickens too.
I had several come down with a respiratory infection because of the 20 to 50 degree drop in temperatures. I was able to treat most of them in their coop/run and the worst ones moved into the house temporarily. Tylan did its magic and had them feeling much better in a few days. They all got treated for 5 per the instructions. While they were being treated outside I set up heat lamps in their coop so they can come and go as they need the extra warmth.