It is likely their standards of what was food may be slightly different from our particular sensibilities, and the usefulness of the bone parts as needles and hunting points explains some of this.
“It is not necessary to cut and peel flesh from bones to remove feathers”
I was wondering as well why peeling ans scraping of bone would indicate removal of feathers. That type of finding would seem to show that flesh was cut apart. Maybe the Neanderthal took the feathers to wear, but I would like to know why this discovery automatically led scientist types to think that a prehistoric person chopped up an animal just to pluck a feather.