Arctic Terns, sterna paradisea, Ny Alesund, originally uploaded by Dave Walsh Photography.
Arctic Tern, sterna paradisea, preparing to mate and nest in the Arctic scientific research village of Ny-Alesund, Svalbard. Two Arctic Terns, sterna paradisea, perched near the dog yard Ny Alesund, Svalbard. These terns migrate more than any other species bird – up to 35,000km per year for some birds, as the travel to Antarctica and back, and can enjoy two polar summers.
Photographed during the Greenpeace Arctic Under Pressure expedition 2010.
Writer, photographer, environmental campaigner and "known troublemaker" Dave Walsh is the founder of Blather.net, described both as "possibly the most arrogant and depraved website to be found either side of the majestic Shannon River", and "the nicest website circulating in Ireland". Half Irishman, half-bicycle. He lives in southern Irish city of Barcelona.