Honestly I have absolutely no idea what this is. I’ve had chickens now almost 10 yrs and have never seen this before. It is a huge mushy lump above her vent, about 1 to 1 1/2 inches above. If she was egg bound it has definitely broken but she is acting absolutely fine. Eating her fill, drinking normally, full of energy and strong too. Currently I have her soaking in warm epson bath, I gave her a dose of penicillin but idk what else to do for her. Please any thoughts or ideas, the closest vet is over 3 hours away and 2 days before they will open.