Help- what is this??

[Freechicken]

[VIDEO][/VIDEO]We just got this hen yesterday from a friend who needed to re-home her flock. Tonight we noticed this enormous mass between the hen's legs. Her vent appears normal and the mass is much lower. It is red and soft (fluid-filled?) and larger than a softball. Any ideas on what it could be and what we can do?

 

[realsis]

not sure if th mass is infected or an infection of sorts but you can try antibotic, sounds like maybe a trip to vet to drain the mass would help. my dog had a huge mass like that the vet drained it and started antibotic. the dog is fine now.maybe this would help.