Pete Oxford / Peruvian booby nest colony (Sula variegata) Lobos de Afuera, Peru, South America

JIM CLARE / Guano unloading gantry with Peruvian boobies (Sula variegata). Chincha Island, Peru, South America

Merryn Thomas / Humboldt Penguin (Spheniscus humboldti) and Peruvian booby (Sula variegata). Islas Ballestas, Paracas, Ica Region, Peru. November 2013.

Cyril Ruoso / Peruvian booby (Sula variegata) breeding colony at coast of Punta San Juan, Peru, 2013

Cyril Ruoso / Peruvian booby (Sula variegata) breeding colony among buildings on guano island, Pescadores, Peru.

Cyril Ruoso / Peruvian bobby (Sula variegata) adult on nest with chick, begging for food, guano Island, Pescadores, Peru

Cyril Ruoso / Peruvian bobby (Sula variegata) adult on nest with chick, begging for food, guano Island, Pescadores, Peru

Cyril Ruoso / Peruvian bobby (Sula variegata) adult on nest with chicks, begging for food, guano Island, Pescadores, Peru

Cyril Ruoso / Peruvian bobby (Sula variegata) fight between two adults on their nests, guano Island, Pescadores, Peru

Cyril Ruoso / Peruvian bobby (Sula variegata) adult on nest with chicks, guano Island, Pescadores, Peru

Cyril Ruoso / Peruvian bobby (Sula variegata) chick stretching wings at nest, guano Island, Pescadores, Peru

Cyril Ruoso / Peruvian booby (Sula variegata) adult on nest with chicks on cliff edge, guano Island, Pescadores, Peru

Cyril Ruoso / Peruvian booby (Sula variegata) with chick begging to be fed, guano island of Pescadores, Peru

Cyril Ruoso / Peruvian booby (Sula variegata) with chick begging to be fed, guano island of Pescadores, Peru

Cyril Ruoso / Peruvian booby (Sula variegata) chicks fighting at nest, guano island of Pescadores, Peru

Cyril Ruoso / Peruvian booby (Sula variegata) on nest feeding chick, guano island of Pescadores, Peru

Cyril Ruoso / Peruvian booby (Sula variegata) on nest with chick on cliff edge, guano island of Pescadores, Peru

Cyril Ruoso / Peruvian booby (Sula variegata) and Guanay cormorant (Phalacrocorax bougainvilli) flock, Punta Coles reserve, Peru.

Cyril Ruoso / Peruvian booby (Sula variegata) and Guanay cormorant (Phalacrocorax bougainvilli) flock, Punta Coles reserve, Peru.

Konrad Wothe / Booby colony (Sula variegata) colony, Palomino Islands, Islas Palomino, Peru.

Konrad Wothe / Peruvian Booby (Sula variegata) nesting colony, Palomino Island, Peru

Cyril Ruoso / Peruvian Booby (Sula variegata) adult and chicks at nest, Isla Pescadores, Peru

Cyril Ruoso / Peruvian Booby (Sula variegata) group roosting on cliff face, Paracas National Reserve, Peru

Glenn Bartley / Peruvian Booby (Sula variegata), Islas Ballestas, Peru

Eric Baccega / Peruvian bobby (Sula variegata) nesting colony, Isla Ballestas, Ballestas Islands, Peru.

JIM CLARE / Peruvian boobies {Sula Variegata} with stack of guano, local industry, Chincha Island, Peru

JIM CLARE / Peruvian boobies {Sula variegata} on guano unloading gantry, Chincha Island, Peru.

JIM CLARE / Peruvian boobies {Sula variegata} on guano unloading gantry. Chincha Island, Peru.

JIM CLARE / Peruvian boobies {Sula variegata} at nest site on cliff, Paracas NP, Peru. Note build up of guano used for fertiliser

Pete Oxford / Peruvian booby nesting colony {Sula variegata} Lobos de Tierra, Peru

Cyril Ruoso / Peruvian Booby (Sula variegata) with chicks at nest, Isla Pescadores, Peru

Cyril Ruoso / Peruvian Booby (Sula variegata) calling, Isla Pescadores, Peru

Cyril Ruoso / Peruvian Booby (Sula variegata) and begging chicks at nest, Isla Pescadores, Peru

Joel Sartore / Photo Ark / Peruvian booby (Sula variegata) portrait, Huachipa Zoo, Lima, Peru. Captive.

Joel Sartore / Photo Ark / Peruvian booby (Sula variegata) portrait, Huachipa Zoo, Lima, Peru. Captive.

Roland Seitre / Peruvian booby (Sula variegata) in flight with colony in background, Guanape Islands, La Libertad, Peru.

Roland Seitre / Peruvian booby (Sula variegata) colony perched on cliff edge, Guanape Islands, La Libertad, Peru, Pacific Ocean.

Roland Seitre / Two Peruvian booby (Sula variegata) perched on rocks, Guanape Islands, La Libertad, Peru.

Roland Seitre / Peruvian booby (Sula variegata) colony, Guanape Islands, La Libertad, Peru, Pacific Ocean.

Roland Seitre / Peruvian booby (Sula variegata) in flight ,Guanape Islands, La Libertad, Peru, Pacific Ocean.

Roland Seitre / Peruvian Booby (Sula variegata) flying, Guanape Islands, Peru

Roland Seitre / Peruvian Booby (Sula variegata), Guanape Islands, Peru

Roland Seitre / Peruvian Booby (Sula variegata) nesting colony, Guanape Islands, Peru

Roland Seitre / Peruvian Booby (Sula variegata) at nest with eggs, Guanape Islands, Peru

Roland Seitre / Peruvian Booby (Sula variegata) nesting colony, Guanape Islands, Peru

Roland Seitre / Peruvian Booby (Sula variegata) colony with collected guano, Guanape Islands, Peru

Roland Seitre / Peruvian Booby (Sula variegata) pair, Guanape Islands, Peru