Shi is apparently the biggest chicken in our house (at least for the moment). After noticing one small spot on Sunday evening, this is what things have progressed to as of 4pm today. Her belly looks about the same as her back.
She insisted I take this picture of her neck. You can see some of the worst welts are here.
The other chickens in our house currently are Jericho and (I think) Phoenix. Time will tell if anyone else becomes a chicken... And, if you are interested in turning your kids into chickens (it's temporary) then let me know!