I couldn't find any information on where to go to complete these quests - but then I thought, "I wonder if the Enemy List includes their locations?"
And it does.
But for convenience sake I'm listing them out here as well. (I never would have thought to look for the dragons in these locations, so THANK YOU @1oldtymer for putting together the Enemy List!)
42: Paradise Bird - Galbure's Island (presumably, the island on which Galbure's Tower is located?)