This was interesting. A transfiguration of a feather with nothing to work on? Tricky. It is true hear hair and probably feathers must be made by dead cells, but they were pretty much organisms as opposed to solid matter such as... metal pins. Indeed, to picture the whole substance before her...

"Ah, plumexer--" Nothing. "Plumexer!" ...Nop. "Plumexer..." One more time, "plumexer," That's all there''s to it.

Diane was crouching down at her seat and flicking her wand, "...plumexer... plumexer... plumexer..." After five minutes of having repeated the incantation, she had managed to come up with a furball of sorts, half an eyebrow, a naked shaft and a very ill-looking feather missing almost all of its barbs. It would take her at least 10 more minutes at this pace...