Peter Cairns / 2020VISION / Arctic Tern (Sterna paradisaea) against white sky, Farne Islands, Northumberland, England, UK, July

Andrew Parkinson / Arctic tern (Sterna paradisaea) adult hovering directly in front of the sun, defending nest from perceived threat, Farne Islands, UK. June

Ole Jorgen Liodden / Arctic tern (Sterna paradisaea) in flight, Svalbard, Norway, July. Highly commended, BIRDS category, GDT 2011 competition. Joint runner up in Creative Visions of Nature Category, Wildlife Photographer...

Roger Powell / Arctic Tern (Sterna paradisaea) preening tail feathers, Varanger Fjord, Arctic Norway. June

Andrew Parkinson / Arctic Skua (Stercorarius parasiticus) in flight, stealing fish from Arctic Tern (Sterna paradisaea). Shetland Islands, Scotland, UK, July. (non-ex)

Andrew Parkinson / Arctic Tern (Sterna paradisaea) in flight chasing Arctic Skua (Stercorarius parasiticus) that has stolen its food. Scotland, UK, July. (non-ex)

Andrew Parkinson / Arctic Skua (Stercorarius parasiticus) pair stealing fish from Arctic Tern (Sterna paradisaea) Shetland Islands, Scotland, UK, July. (non-ex)

Edwin Giesbers / Arctic tern (Sterna paradisaea) in flight, vocalising, aggresive behaviour, Farne Islands, Northumberland, UK, June

Edwin Giesbers / Arctic tern (Sterna paradisaea) Farne Islands, Northumberland, UK, June

Edwin Giesbers / Arctic tern (Sterna paradisaea) in flight, calling, Farne Islands, Northumberland, UK, June

Edwin Giesbers / Arctic tern (Sterna paradisaea) in flight, Farne Islands, Northumberland, UK, June

Nick Garbutt / Arctic tern (Sterna Paradisaea) hovering in flight over an iceberg.Peterman Island, Antarctic Peninsula, Antarctica. February.