I wasn't sure where to post this. I decided here, despite this thread being old, because it's the one that saved my hen.
Saturday, after a week of late nights at school (I'm a full-time grad student), I was out with the chickens letting them get some much-needed outdoor time and I noticed the boss hen, Daisy, was very lethargic. After much research, my DH and I concluded it was sour crop. One of the new waterers had leaked during the week and I didn't catch it when I was checking on the flock at night. I'm guessing the wet shavings in the coop were the culprits that got Daisy sick. Luckily, none of the other birds show any sign of problem. And trust me, I examined each and every one.
We began following Miss Prissy's advice from this thread. Daisy showed improvement by Sunday. This morning (Tuesday) she jumped to her feet when I went to her first thing. Her crop feels normal and she's clucking away as she walks about the pen we built for her. Her stool is still loose, though, so I'm keeping her inside for another couple of days as I ease her toward a normal diet.
I just wanted to say thanks for the help. I'm not on the forum much, because homework, DH, cat, and chickens consume most of my time. But it's nice to know I've got everyone here to look to when things go awry. If she could talk (or type, for that matter), I'm sure Daisy would express her thanks, too.
Deanne