WW: The Case of the Absent Hen

(A few days ago I was walking around a crumbling, overgrown abandoned farm near my house when I happened on a mass of feathers piled on a fallen tree trunk. Even more intriguing: no sign of their owner. No bones, no flesh, not even blood. Just a nearly complete, completely empty, suit of feathers. I can't think of a local predator that surgical, though my experience in such forensics is far from…