Fishnet- Glad you got it figured out with Izzy. How much is it to send a sample in and did you have to go through the vet to do it?
CedarAcres- Sorry to hear about losing a chicken.

So far, the rooster hasn't been performing his duties. He doesn't help them find food and I've seen him run from cats that get in the yard! Big Ethel, my Barred Rock is the head hen. I think they will be just fine without a rooster.
I put Nugget back with her flock just before dark last night. She seemed anxious to get back to them. As soon as I opened the gate, she ran under the dog house and was shrieking so loud. Nobody was chasing her. The rest of the flock just stopped and watched her. She did come out and go into the coop first. I got out there first thing this morning and she was the only one still in there. I think she's been getting picked on for a while and she's just dealing with it by hiding. I noticed my little Buff Orpington was hiding today too. They have places to go where the bigger chickens can't get to them. I think until the rooster is gone in 2 weeks, I'll keep Nugget on the other side of the fence to keep her safe, the take her to the coop at night. Princess treatment, I know!