Further to this, Christidis and Boles refers to the species as White-winged Black Tern, both IOC 3.2 and IOC 3.3 refer to it as White-winged Tern. Clements refers to it as White-winged Black Tern. Morcombe lists it as White-winged Black Tern, as does Pizzey and Knight. In fact, I can find no reference to “White-winged Black-tern” so I would tend to agree with Nikolas that “Black Tern” is intended to be descriptive, rather than a proper noun for a group.
Paul Dodd Docklands, Victoria
