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The Arctic tern (Sterna paradisaea) is a medium-sized species of seabird. It breeds in the Arctic and sub-Arctic regions of Europe, Asia, and North America. The Arctic tern also has the longest migration of any known animal. It migrates 70,900 kilometres (44,100 mi) each year.

Arctic tern
Arctic terns.jpg
Scientific classification
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Binomial name
Sterna paradisaea

The Arctic tern is shown on the postage stamps of several countries and dependent territories. Examples are the Åland Islands, Alderney, and Faroe Islands and the countries include Canada, Finland, Iceland, and Cuba.