Dutch word vogelgriep comes from Dutch vogel, Dutch griep (The contagious viral disease influenza, flu.)

Detailed word origin of vogelgriep

Dictionary entry	Language	Definition
vogel	Dutch (nld)	(figuratively, , slang) A dude, cat. A bird, feathered animal. A gaai, a feathered target in archery or shooting.
griep	Dutch (nld)	The contagious viral disease influenza, flu.
vogelgriep	Dutch (nld)	Bird flu.