This split-second bird photo shows "a truly extraordinary moment captured in time", says judge of prestigious photography competition

Silhouettes of birds flying against a cloudy sky with a bright sun halo creating a dramatic circular light effect.

An extraordinary image showing silhouettes of frigatebirds flying beneath a dramatic sun halo has earned Canadian-based photographer Liron Gertsman another major accolade.

Previously recognized as the Bird Photographer of the Year, Gertsman has now won the Grand Prize in the United States and Canada contest at the Audubon Photography Awards with his striking image of magnificent frigatebirds.