I wanted some opinions on my chosen course of action here from people with more experience in this dept. I have eight 12 week birds in a small pen inside my main chicken pen. This morning I noticed one of them was fluffed up, tail down, kept closing her eyes, mouth breathing and a little "coughing" every once in awhile. This sounded like classic gapeworm symptoms to me. I looked down her throat as best I could, didn't see anything abnormal but decide to treat for gape anyway. I have her in a separate hospital cage, gave her a half-bb sized bit of fenbendazole 10% paste (I estimate her weight is at about 1.5 lbs). In the small grow out pen she came from none of the other 7 birds are exhibiting any symptoms. I very liberally covered the ground with DE in hopes of preventing any further transmission. I try very hard to raise my birds as organically as possible, but recognize that sometimes you have to go with meds. I felt like treating the other birds was overkill since there were no symptoms and because they're still young (small) and fenbendazole is pretty strong stuff. Do you think this was an appropriate response?