I have a two year old Red Star hen with similar symptoms; lethargy, swollen abdomen, passing watery diarrhea, that sometimes has deep green solids in it. I've been taking her temperature and she's over 106 degrees. I had been treating her with penicillin and monitoring her temperature, but it wasn't going down.
My concern is that she may have EYP or lymphoid leukosis. If it's LL, this could be transmitted to the rest of the flock? I've done some searches on Ag college websites, especially the University of Florida and their literature says that LL is not easily transmitted between birds. Does anyone have any experience with differential diagnosis between EYP and LL?
My Stella has been feeling poorly for a few weeks, but only this week did she really start to slow down. I brought her into the house on Tuesday and she's living in our bathroom, with trips out to the deck in the afternoon to sun herself.
Her sister, Blanche (also a two year old Red Star), is also starting to show signs of feeling poorly. Last afternoon when we let the girls out for supervised free ranging (we have too many stray dogs in our part of the country), Blanche stayed in the coop. I checked her out and her abdomen felt swollen too, but she came out to scratch around with the rest of the flock. Now, I don't know that Blanche and Stella are really genetically sisters, but they came from the same hatchery and were hatched on the same day.
Any suggestions you can give would be appreciated. I plan to bathe Stella today and have been massaging her abdomen. I can't feel any masses.