Thanks for taking the time.
Those logs show griffins and there are none in NK. Must have been in EC or WC, and these arent common spawn. You cant reliably farm these. The only zone where you can actually farm blood is NK, but with griffons & griffawns not dropping blood, you just have to wait for a griffenne.. and griffennes are the rarest amongst the 3 species.
Regarding classic drop rate, I think its a rare drop, like most of the brewing tradeskills mats, but without griffons & grifawns, this is just mission impossible.
As for facts... the only thing I was able to find is this (from 2003 in this thread :
http://everquest.allakhazam.com/db/item.html?item=14891)
«*Don't let the name fool you, this will drop from Griffons and Griffawns too, not just Griffennes.
Not sure about the drop rate but having killed dozens of griffawns in EK, I can say that its pretty rare drop from them. Its not worth camping them for it, but if you need this stuff for Royal Temper there is no sense not to kill them for it also if you are capable.*»