Hard to photograph this properly, but my <1 year old hen has a bulbous bald protrusion underneath her vent that looks horrifying, but doesn’t seem to be bothering her in the slightest. She’s moving and walking normally and doesn’t have any symptoms of being egg bound. She seems to be eating and drinking normally. I think she’s even been laying eggs, but I’m not totally positive because I have 27 other hens and it’s hard to monitor without camping out in the coop. I’ve gently palpitated it to see if I could feel any lumps and it just feels like fluid in there. I first noticed this about 3 weeks ago and since then her condition is the same. What is going on here? Should I be concerned? Is she just a weirdo?