Arctic Tern - Sterna paradisaea - 1, Ny Alesund, Svalbard
Svalbard / Spitsbergen pictures, travel in the Arctic
Arctic Terns are not especially large birds, they have a length of 33-39cm (13-15") and wingspan of 76-85cm (26-30"), they weigh just 86-127g (3-4.5 oz). They are famous for their annual migration which takes them from Northern to Southern polar regions and back again every year. For some individuals, this is as much as 80,000km per year.
They travel more than any other animal on earth and see more daylight than any animal being in each polar region during its respective summer with 24 or near 24 hour daylight. In a lifetime of 30 years or more, an Arctic Tern may travel more than 2.4 million km. Reference
The distribution of the Arctic Tern. Breeding range in red, migration green arrows and northern hemisphere winter is spent in the blue area around
Antarctica. Picture credit - Andreas Trepe, licensed under creative commons attribution-share alike 2.5 generic license.