Which is the longest migration of animals in the world?

The tiny arctic tern makes the longest migration of any animal in the world, flying about two times farther than previously thought, a new study says.

Until recently, only larger birds could be followed using tracking devices, because the gadgets were too big and heavy to attach to small birds.

But the team used a tiny tracker developed by the British Antarctic Survey, which weighs just a twentieth of an ounce (1.4 grams)—light enough for an Arctic tern to carry on a band around its leg.

Arctic terns also follow a zigzagging route on their spring trips back to Greenland. Rather than flying straight up the middle of the Atlantic, the birds hopscotch from Antarctica to Africa to South America to the Arctic.

 

Picture Credit : Google