Nazca Booby (Sula granti) [XC114012]
by Eric DeFonso from Isla Genovesa (upland tourist trail), Galapagos, Ecuador (call)
Nazca Booby (Sula granti) [XC755157]
by Barry Edmonston from , United States (flight call)
Subspecies
Sula dactylatra (Sibley and Monroe 1990, 1993) has been split into Masked Booby (Sula dactylatra) and Nazca Booby (Sula granti) following AOU (2000).
Considered by some authors to be a subspecies of Masked Booby (Sula dactylatra).