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Always toward the sun, always live in the bright world, always live where the sun does not set. We humans can't do it, but there is a bird that can, and that is the Arctic Tern, so people also call it the "day bird".
< h1 class = "pgc-h-arrow-right" > migration route, which travels back and forth between the two poles, with a flight distance of more than 40,000 kilometers. </h1>
Arctic terns arrive in the Arctic every May and then spawn and breed within the Arctic Circle. The Arctic Circle enters a polar day state in May and June, when the little seagulls will break out of their shells and learn to fly. When autumn comes, the little seagulls can fly with their parents.
It took more than a month to cross the Atlantic or Pacific Ocean to Antarctica. It eventually reached the Antarctic continent in December and stayed there for about 4-5 months before returning to the Arctic Circle again in April. Cycle!
Each migration circumnavigates the Earth in half a circle, through two summers a year, moving south from its northern breeding area to the ocean near Antarctica, and then north back to the breeding area, with a total journey of more than 40,000 kilometers, which is the longest migration route among known animals.
Departing from the end of summer in the Antarctic and flying to the North Pole coincides with the beginning of summer. Arctic terns enjoy sunshine for as long as no other animal can compare!
< h1 class = "pgc-h-arrow-right" > Arctic tern, a seabird belonging to the genus Tern. </h1>
Arctic terns are medium in size, with a body length of 33–39 cm and a wingspan of 76–85 cm. It is found in the Arctic and nearby areas.
The tail is forked and its wings are narrow and long. These wings have a much greater buoyancy than other birds when flying in the air. The beak shell and feet are generally bright red, the whole body is mostly white feathers, the wings are gray-black, the tail will be longer than the average seagull, and a handful of black hairs will grow on the top of the head.
The difference between males and females is not very large, when it flies in the air, it will see that its wings are longer than other birds, so it does not need to swing very frequently, and can maintain a longer glide.
At the same time, Arctic terns are also experts at diving!
< h1 class = "pgc-h-arrow-right" > the habits of Arctic terns</h1>
Arctic terns generally inhabit the coast or on the way to the wetlands and swamps on the way to migration, so they mainly feed on shellfish, small fish and shrimp, insects, etc., they often hover on the surface of the sea, once aimed at the prey, they will quickly dive into the water to catch. Although arctic terns have a very strong desire to fight, their sense of collectivity is also very strong, especially when foreign enemies invade and migrate, they will attack in groups to defend their territory!
Arctic terns are carnivores, eating mainly fish and aquatic invertebrates; they are one of the most aggressive terns, and will attack large invaders and even humans in order to defend their nests.
Not only that, but they also have a very tenacious vitality. It flies at least 1.5 million kilometers in its lifetime. Follow-up studies of Arctic terns have found that they can live for more than 33 years, and the 20-year lifespan is likely to be fairly common.
Bird migration almost every year, perhaps in the future some birds may also migrate to a longer distance, the environment is changing, birds in order to adapt to survival will move farther distances, so the migration of birds does not have a worldwide characteristic of the distance, but in the process of continuous change.
It's all about survival and reproduction!
Thank you for your attention!