Danny Green / Brunnich's guillemot (Uria lomvia) colony in mist, many birds in flight and nesting on cliffs. Svalbard, Norway, July 2018.

George Sanker / Razorbill (Alca torda) in flight. Machias Seal Island, Maine, USA / New Brunswick, Canada. July.

George Sanker / Atlantic puffin (Fratercula arctica) landing, wings outstretched. Machias Seal Island, off the coast of Maine, USA. July. This island is disputed between USA and Canada.

Mike Read / Razorbill (Alca torda) two fighting for nesting location on a grassy cliff top, Lunga Island, Treshnish Isles, Inner Hebrides, Scotland, UK, May.

Mike Read / Razorbill (Alca torda) on a grassy cliff top, Lunga Island, Treshnish Isles, Inner Hebrides, Scotland, UK, May.

Staffan Widstrand / Atlantic Puffin (Fratercula arctica) flapping wings, Hornoya Island, Varanger peninsula, Arctic Norway

Andy Rouse / Black guillemot (Cepphus grylle) at sunset on water, Svalbard, Norway, July.

Andy Rouse / Brunich's Guillemot (Uria iomvia) flying in front of old glacier, Svalbard, Norway.

Terry Whittaker / Common murre / guillemot (Uria aalge) breeding colony on cliff edge. Langanes Peninsula, northeast Iceland. May.

Terry Whittaker / Man being lowered down cliff to collect seabird eggs including those of Common murre / guillemot (Uria aalge). Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland. May 2018.

Terry Whittaker / Common murre / guillemot (Uria aalge) four in breeding colony, eggs exposed on rock surface. Langanes Peninsula, northeast Iceland. May.

Terry Whittaker / Man collecting seabird eggs including those of Common murre / guillemot (Uria aalge). Skoruvikurbjarg cliffs, Langanes Peninsula, Iceland. May 2018.