In full "Abdim's stork". A small stork native to Eastern Africa, Ciconia abdimii, with predominantly black plumage and white underparts.
Mid 19th century; earliest use found in Carl Andersson (1827–1867). From the name of Bey El-Arnaut Abdim, early 19th-cent. Turkish governor of Wadi Halfa in Sudan (formerly Nubia).