Jerry Hill states in his WCT:
"On top of the larger stack of boxes that would have been used for concealment. there was a chicken leg bone and a paper sack..."
This is obviously the half eaten chicken piece spotted by Mooney (who isn't sure which stack of boxes the chicken piece is on but Hill seems to confirm it's the stack that actually forms part of the SN)
At some point the chicken piece seems to go missing and all we hear about is chicken bones.
Harry Weatherford
The 11-23-63 report of Deputy Sheriff Harry Weatherford notes "I came down to the 6th floor, and while searching this floor, Deputy Luke Mooney said "here are some shells." I went over to where he was and saw 3 expended rifle shells, a sack on the floor and a
partially eaten piece of chicken on top of one of the cartons which was used as a sort of barricade."
Officer A. D. McCurley, Deputy Sheriff, Dallas County Sheriff's Office (Statement 11/22/63)
Officer Jack Faulkner and I, together with several other City officers went to the building and started checking the floors. We were searching the 6th floor when Deputy Sheriff Mooney, who was also on the 6th floor, hollered that he had found the place where the assassin had fired from.
I went over and saw 3 expended shells laying by the window that faced onto Elm Street, along with a half-eaten piece of chicken that was laying on a cardboard carton. It appeared as if the assassin had piled up a bunch of boxes to hide from the view of anyone who happened to come up on that floor and had arranged 3 other cartons of books next to the window as though to make a rifle rest. This area was roped off and guarded until Captain Will Fritz of Dallas Police Department Homicide Bureau arrived. It was about this same time that Deputy Sheriff Eugene Boone yelled that he had found the rifle which had been placed between some rows of cardboard boxes near the staircase which leads down to the 5th floor.