Hi I have a Bantam of unknown age (she lays eggs) which I inherited 2 months ago. I recently noticed a rather large lesion on her upper leg, up in the area around her leg feathers. I would not have seen it except that I had to give her a bath. When she was wet I finally saw this what appears to be a blood blister about twice the size of a pea. I poked it three times with a hot needle and it bled very little before the pressure of the blister seemed to close the small hole I made so no more blood could escape. She isn't limping and is eating and drinking just fine, I just don't want this abscess to get any worse. I live in an area where there are no vets that treat chickens specifically and our state extension office does not have any poultry specialists on staff so I am kinda in the dark here. Could someone look at this photo and help me identify what this is?