L. plumbeus  leaden, plumbeous, lead-coloured  < plumbum  lead.
● ex “Garza Aplomada” of de Azara 1802-1805, no. 347 (syn. Ardea cocoi).
● ex “Spotted-tailed Hobby” of Latham 1781 (Ictinia).
● ex “Todus supra ex plumbeo canus ...” of Pallas 1769, and “Plumbeous Tody” of Latham 1782 (Polioptila).
● ex “Plumbeous Warbler” of Latham 1787 (unident.).

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 on 12 December 2018).