I found my RIR with this large, swollen,squishy,red, featherless area about 2inches below her vent?? Shes walking around, eating, drinking etc....(acting normal) Does anyone have any clue of what this is?? Or if there is anything I can do about it to help her? My immediate thought was maybe its peritonitis, IDK much about chickens and its just a guess. I imagine this area is gonna get larger and she will die, but I dont know how it happend, or if there is anything I can do to help her?? Thank You sooo much for your help! Oh shes 18months old.