Songbird race! (And other stuff.)

[Metastachydium]

I would do one or the other, just for the sake of clarity. That it is treated as an item but doesn't give rules for how the item works seems to be the confusing part.

Okay, I wrote up the mantle as a magic item, and included a few sentences about how the creature drops it when killed under the special ability. Hope that solves the issue.
(Parenthetical request for aid: I had no idea how to price it, so I tentatively made it a bit cheaper than a +4 bracers of armour/monk's belt combo. If anyone has a better idea, I'm all ears.)

I suppose that explains the lack of lore on the rest of the creatures. Feel free to use anything I suggest.

Sorry (I'm boring like that) and thanks!