Just fix you up one of those automatic chicken pluckers. I would guess you have to set in on the gentle cycle though.
http://www.mcmurrayhatchery.com/product/automatic_chicken_picker.html
Just give him a supply of corn cobs modified so they can be screwed onto his stump. If they 'irritate' this fine fellow, then provide a supply of bacon grease to sooth his pain. He can use another corn cob as an applicator.