I took her to the vet today. Vet said they didn't feel any lumps, but abdomen is swollen. Parasite was negative. They said to isolate and increase brooder temp back to 90, and gave me a supplement to handfeed three times a day. Also said to chlorinate the water and offer greek yogurt.
I have 2 ayem cemani hatched 3-21-21 (along with 2 wyandotte). One is growing well, the other is pretty much the same size as when I got them. I've been weighing the tiny chick and she is gaining some weight, but weighs about 70g. Her belly (above the vent) is swollen and I can feel a hard lump...