Mark Bowler / Inca tern {Larosterna inca}in flight, Paracas National Park, Peru

JIM CLARE / Pair of Inca terns, (Larosterna inca). Punta San Juan Reserve, (Reserva Nacional de Islas, Islotes y Puntas Guaneras) Peru.

Konrad Wothe / Inca tern (Larosterna inca) South America, captive

Konrad Wothe / Inca terns (Larosterna inca) South America, captive.

Cyril Ruoso / Inca tern (Larosterna inca) perching on cliff face in Nazca coastal desert in Paracas National Reserve, Peru

Cyril Ruoso / Inca terns (Larosterna inca) courtship behaviour, Punta San Juan, Peru

Cyril Ruoso / Inca tern (Larosterna inca) male and female in courtship display, guano island, Pescadores, Peru

Cyril Ruoso / Inca tern (Larosterna inca) male and female pairs in courtship display, guano island, Pescadores, Peru

Cyril Ruoso / Inca tern (Larosterna inca) male and female pairs in courtship display, guano island, Pescadores, Peru

Cyril Ruoso / Inca tern (Larosterna inca) small flock on rocks, guano island Pescadores, Peru

Cyril Ruoso / Inca tern (Larosterna inca) taking off from guano island Pescadores, Peru

Cyril Ruoso / Inca tern (Larosterna inca) arriving at nest site with fish in beak, guano island, Pescadores, Peru