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

Swoop Gizzard

NPC	Level	Zone	Chance
Wiry Swoop	5 - 7	Mulgore	15.0%
Swoop	7 - 9	Mulgore	15.0%
Taloned Swoop	8 - 10	Mulgore	15.0%