Arctic Tern is a sea bird which belongs to family Sternidae under Sterna genus. Its biological name is Sterna paradisaea. These birds are bold, beautiful and medium in size. They have white and grey feathers. Their feet and beak are red in color. Arctic Tern has white forehead and cheeks.
There size in length varies from 28 to 39 cm. However, their wingspan ranges from 76 to 85 cm. Its upper wing is grey with white edge. It has long tail, forked and white in color. Its weight varies from 90 to 120 g. There is no difference in appearance of male and female Arctic Tern. They look like same.
Arctic Terns are renowned for their yearly long distance migratory. The bird leaves it's breeding Arctic lands to Antarctica in winters, which covers around 40,000 km distance. This is the longest distance traveled yearly by any bird.
The Arctic Tern molts its feathers in winter. During molting period it does not fly, instead it takes rest sitting on small blocks of ice at the edge of pack ice. But the molting happens so quickly that it is seen without flying just for while.
Arctic Tern lives on eating insects, small fish, and crustaceans. Arctic Terns build their nests on bare rocks, which make them to take care of it from predators. The bird lays one or two eggs in their nest. The egg is of Olive to buff with dark brown spotted color. It is concentrated around the larger end.
The information on its population is not available properly now. The women hats manufacturers killed many of Arctic Terns from the Atlantic lands which caused decrease in their population in late 19th century. And now its southernmost populations are also decreasing, which has become a serious concern.
Arctic Tern is known with the name Sterne arctique in French and Gaviotín del Artico or Charran artico in Spanish.