quite puffed up and noticeably uncomfortable. I determined she had sour crop and I started giving her yeast infection medicine. Her crop seems much better and I’ve still been giving her the medicine as one of the other articles say to give it twice a day for 7 days.
		
		
	 
	
		
	
	
		
		
			I think the sour crop has been cured, it hasn’t felt full or squishy since a day or two after I started treating it.
She is 2.5 years old.
		
		
	 
	
		
	
	
		
		
			Her abdomen does seem slightly bloated.
		
		
	 
	
		
	
	
		
		
			I also noticed that the scales on her legs look a little strange. I’ll try to attach a photo. Could that be what is spurring all of this on? She did eat some grit today. I put some B12 on it.
		
		
	 
I agree, very likely she has some type of reproductive disorder.  Yellow urates can point to liver dysfunction so she may have something going on there too. 
If you have a vet that can run a fecal float to rule out worms that would be good too. 
Continue with the crop treatment for the full 7 days.  See that she's drinking and eating. 
Supportive care of giving poultry vitamins a couple of times a week may help. 
Treat the raised scales on her feet by rubbing a bit of Vaseline or Nu Stock cream onto her legs, focusing on working the products up and underneath the scales. 
I'm not seeing anything that looks like lice or mites in the feathers, but as you clean her up, do take note of any crawling bugs or black/red dots accumulating around the vent, under wings, etc.  which would indicate she needs to be dusted with Permethrin.  Often birds that are sick can have external parasites. 
Photos of her standing may be helpful.  Other things you can try if you wish are giving a round of antibiotics, deworming and/or treating for Coccidiosis.  None of these are likely cures, underlying conditions still exist, but these are options to use as needed for supportive care and to possibly make a hen more comfortable for a short period of time.
If vet care is an option, that would be best.