Tui De Roy / Masked Booby (Sula dactylatra) courting pairs roosting on cliff edge, Wenman Island, Galapagos Islands, Ecuador

Tui De Roy / Masked Booby (Sula dactylatra) fledgling stretching wings, Tower Island, Galapagos Islands, Ecuador

Tui De Roy / Masked Booby (Sula dactylatra) couple courting at sunset, Tower Island, Galapagos Islands, Ecuador

Tui De Roy / Masked Booby (Sula dactylatra) calling at nest site, Tower Island, Galapagos Islands, Ecuador

Tui De Roy / Masked Booby (Sula dactylatra) showing binocular vision, Tower Island, Galapagos Islands, Ecuador

Tui De Roy / Masked Booby (Sula dactylatra) calling, Tower Island, Galapagos Islands, Ecuador

Tui De Roy / Masked Booby (Sula dactylatra) observed by tourists that frequently get in their way, Punta Suarez, Hood Island, Galapagos Islands, Ecuador

Tui De Roy / Masked Booby (Sula dactylatra) yawning, Hood Island, Galapagos Islands, Ecuador

Tui De Roy / Masked Booby (Sula dactylatra) portrait, Tower Island, Galapagos Islands, Ecuador

Tui De Roy / Masked Booby (Sula dactylatra) pair courting at sunset, Daphne Island, Galapagos Islands, Ecuador

Mitsuaki Iwago / Masked Booby (Sula dactylatra) parent with chick on white sand beach, Hawaiian Leeward Islands, Hawaii

Tony Heald / Masked booby feeding chick {Sula dactylatra melanops} Galapagos-Islands

Tony Heald / Masked booby and chick {Sula dactylatra melanops} Galapagos

Tony Heald / Masked booby feeding chick {Sula dactylatra melanops} Galapagos-Islands

Pete Oxford / Masked boobies on rock {Sula dactylatra melanops} Espanola/Hood Is, Galapagos Book page 122

Pete Oxford / Masked booby {Sula Dactylatra melanops} portrait, Genovesa Is, Galapagos

Pete Oxford / Blue Faced (Masked) Booby, Galapagos

Steve Gettle / Masked Booby (Sula dactylatra) carrying rock for nest building, Galapagos Islands, Ecuador

Steve Gettle / Masked Booby (Sula dactylatra), Galapagos Islands, Ecuador