Nazca Booby (Sula granti) [XC332841]
by Andy Birch from Isla Genovesa, Galapagos, Ecuador (call)
Nazca Booby (Sula granti) [XC816732]
by id from Isla Santa Mar\u00eda (Floreana) (Cab. en Pto. Velasco Ibarra), San Cristobal, Islas Gal\u00e1pagos, Ecuador (begging 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).