What species is the greater flamingo in?

"Greater flamingo" is the common name for the species Phoenicopterus roseus.

Originally, these birds were also known by the name Phoenicopterus antiquorum, reflecting the fact that they are both an Old World species and one of the earliest known to Western scientists.

They have also previously been classified as one of two subspecies of Phoenicopterus ruber--one being the New World species Phoenicopterus ruber ruber, or the Caribbean flamingo, and the other being Phoenicopterus ruber roseus,or the greater flamingo. However, later taxonomic work revealed that there were enough differences between these two "subspecies" to merit considering them distinct species.

Sources:

Kear, J. and Duplaix-Hall, N. 2010. Flamingos (Poyser Monographs). London: T and AD Poyser Books.

Jenkin, P. 1957. The filter-feeding and food of flamingoes (Phoenicopteri). Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences 240(674): 401-493.