(syn. Leptoptilos Ϯ Greater Adjutant L. dubius) Gr. οστεον osteon  bone; ῥοφεω rhopheō or ῥοφαω rhophaō  to gulp down; "Osteorophea immigratoria, [drawing no.] 713" (Hodgson 1844).

Search for more names on the Key to Scientific Names in Ornithology by James A. Jobling.
Recommended citation
Jobling, J. A. (2018). Key to Scientific Names in Ornithology. In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2018). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from www.hbw.com on 19 December 2018).