Items, NPCs, quests, objects and spells of patch 1.12.1, read live from the realm itself.

Strigid Owl Feather

NPC	Level	Zone	Chance
Strigid Owl	5 - 6	Teldrassil	80.0%
Strigid Screecher	7 - 8	Teldrassil	80.0%
Strigid Hunter	8 - 9	Teldrassil	80.0%