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Masked Booby
Sula dactylatra
Order
SULIFORMES
– Family
SULIDAE
Authors: Anderson, David J.
Revisors: Grace, Jacquelyn, and David J. Anderson

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Immature Masked Booby, first-year plumage, s. Pacific, November
Immature Masked Booby, first-year plumage, s. Pacific, November
Adult Nazca Boobies, Galapagos, Ecuador, July
Adult Nazca Boobies, Galapagos, Ecuador, July
Adult Nazca Booby with juvenile, Isla de la Plata, Equador, December
Adult Nazca Booby with juvenile, Isla de la Plata, Equador, December