Chookchick: Good point on the roos. Rehoming them was as heartbreaking as dealing with the sick ones.
Mike & Beekissed & others: I see the point about culling. I've been so stressed out these last few weeks over this bird, trying to figure out what's wrong, wondering what to do, watching her like a hawk (non-stop). Since we returned from the vet, I've only checked in on the other chickens a couple times a day - which is as I had hoped it would be. Refresh the food and water, make sure everyone's okay, give them something to entertain themselves, etc. But here's the beginner question for you. How do you go about culling? I'm such a wuss. I just couldn't do take round back and break their necks or whatever. My current sickie will be put down if the antibiotics don't perk her up in a week but beyond paying to put a chicken down or doing the real dirty business (which wimps like me aren't cut out for), what does one do?