This is in relation to my other question.
Is there a resource available that describes where the creatures of D&D are found more specifically? How common or rare they might be in that area or other areas? How common the knowledge of said creature might be?
My players are all very inexperienced, and my memory is slowly getting worse. I can't recall everything I read in multiple monster books. Even then the books don't usually make any mention of their locale, rarity, or common knowledge.
Does the average villager know about Perytons? Would a traveler or an adventurer? What Intelligence (Nature) DC do I use to determine whether my players know (and what they know) about Harpies (or any other creature)?
I'm looking for something pretty concrete here and not just DM's choice, because I don't know how to go about it myself.