Warning for everyone on the ivermectin. Not the ivermectin gold, although that would be the same warnig. I did my flock last weekend with plain zimectrin paste, a BB size dose, smaller for the Banties. All were fine except for two of my three Egyptians. I don't know if they are missing an enzyme to metabolize ivermectin or what but they nearly died! I found them seizing and unconscious, two hours after worming. One was better in the morning but still wobbly on her legs and with diarrhea. The other was comatose for nearly two days, then was seizing, then finally woke up but was wobbly and unable to stand or eat/drink. I gave her fluids, first subcutaneous and then by dropper as she got a swallow reflex back. Finally by the fourth day, she was very wobbly but able to walk and peck the ground. I put her outside with the flock to perk her up, even though she was still very unsteady and with violent diarrhea. She is doing much better today, a full week later. I honestly can't believe she's alive. That first day, her breathing was so shallow, if she didn't have occasional seizures, you could hardly tell she was alive.
Anyway, I don't think I'll ever use ivermectin again and would strongly caution using it on Egyptian Fayoumis or maybe Campines, since they are supposedly related.