***UPDATED!*** 15 mos old Barred Rock hiding, yellow/green watery diarrhea, weak, NOW NOTICED TO BE

I've had ongoing low-egg production in my flock of 10. 1 SS is broody, but still, I'm getting 2-3 eggs out of a flock of 10. Someone has had diarrhea for a few weeks, couldn't figure out who it was until yesterday. Our 15 mos old Barred Rock was the last one in the coop last night, moving slowly, poopy dropping on her butt feathers. This morning she didn't leave the coop but was hiding in a corner. I lifted her feathers out and she could tuck them back in but she was moving slowly. At one point she just stood in the middle of the coop, not moving, while the other hens moved around her to investigate why I was in the coop. I also noticed she has some black spots on her feet (not noticed if they were there before, the other 2 BRs don't have them).

Could this be a worm problem? Or some other disease? I've never dewormed them so I'm anxious. I'm also worried because I'm going on vacation in 3 days and I want to get her treated before I leave!!!! Please help!!!!

***AS OF THIS MORNING, I'VE ALSO NOTICED SHE IS WHEEZING. WHEN I PUT MY HAND ON HER, SHE FEELS SLIGHTLY LIKE SHE'S PURRING LIKE A CAT, SO I CAN ONLY ASSUME THIS IS CONGESTION IN HER LUNGS?

I CAN'T IMAGINE THIS IS MG SINCE SHE IS NOT SWOLLEN NOR DOES SHE HAVE DISCHARGE ANYWHERE.

THOUGHTS? I FEEL LIKE IF I DON'T MEDICATE HER WITH SOMETHING, SHE WON'T LAST. SHE IS NOT DRINKING AND I AM GIVING HER WATER BY SPOON. I'M FEELING A BIT FRUSTRATED WITH MY INABILITY TO FIGURE THIS OUT.***

 

I've never seen any mites, and we recently cleaned out the coop and replaced the shavings. No white stuff or signs of lice. No eye or nasal discharge, though she seems to keep closing her left eye even when her right is open. Pupils seem normal size. I did find a small nymph tick on her comb when I was inspecting her, but otherwise, nothing else. She had watery poop just run out of her when I was holding her, poor thing. I had her take a few sips of water before I left the coop and left her by the waterer so she wouldn't have to go far to get water.

I just called our Agway who has a local chicken "expert" and they were suggesting antibiotics in the water, but I would like a second opinion. Abx won't help if she still has worms, but I don't want to overmedicate her either!

 

So, the Agway "expert" called me back and left a voicemail stating that he thinks it might be fowl cholera?!?! He also said it's "going around." This chicken doesn't have any swollen wattles though. Thoughts???

 

I see that TSC sells SafeGuard. Now before I use it, let me add that I had a red sex-link with a swollen eye last week. It was only one side and went away after a couple of days (my daughter thinks it's still "slightly" swollen though) -- could this be related or was it just her getting stung, which is what we thought? If it was cholera, wouldn't BOTH sides be swollen, including the wattle? I'm wondering if deworming the sick hen might make her worse if parasites aren't her problem? I'm not against getting a fecal from the vet for her.

 

She is actually wheezing now, but I haven't seen her sneeze.