The yellow mucus drainage and gurgling really sound more like a respiratory disease. MG (mycoplasma,) coryza, and ILT are some ones to read about in the link http://edis.ifas.ufl.edu/ps044
Do you notice a bad odor around the face? That could point to coryza. It's possible to have a...
Could you post a close-up picture of a chicken with pox? Why do you think they have wet pox? Most pox is dry pox, which is a virus spread by mosquitoes in warm weather, and the scabs can last up to 4 weeks. There is no treatment for pox. Wet pox or the diphtheric form, causes yellow patches in...