Hanne & Jens Eriksen / Bridled tern (Sterna anaethetus) adult in flight. Masirah Island, Oman.

Hanne & Jens Eriksen / Bridled tern {Sterna anaethetus} close-up with bill open, Masirah, Oman

Hanne & Jens Eriksen / Bridled tern {Sterna anaethetus} on breeding ground, Masirah, Oman

Hanne & Jens Eriksen / Bridled tern {Sterna anaethetus} in flight, Masirah, Oman

Hanne & Jens Eriksen / Bridled tern {Sterna anaethetus} on plank at sea, off the coast of Muscat, Oman

Chris Gomersall / Bridled tern {Sterna anaethetus} calling, Cousin Island, Seychelles

Hanne & Jens Eriksen / Bridled tern (Sterna anaethetus) perched on shrubs, Shinzi Island, Oman

Hanne & Jens Eriksen / Bridled tern (Sterna anaethetus) standing on rocks, Shaghaf Island, Oman

Hanne & Jens Eriksen / Bridled tern (Sterna anaethetus) perched on shrubs, Masirah, Oman

Hanne & Jens Eriksen / Bridled tern {Sterna anaethetus} in flight, tail spread out, Daymaniyats, Oman

Hanne & Jens Eriksen / Bridled tern {Sterna anaethetus} in flight, landing, Daymaniyats, Oman

Hanne & Jens Eriksen / Bridled tern {Sterna anaethetus} in flight, landing position, legs down, Daymaniyats, Oman

Hanne & Jens Eriksen / Bridled tern {Sterna anaethetus} Daymaniyats, Oman