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There is one word of dialectical materialism： Motion is absolute , while stillness is relative. Thousands of years ago, the ancient people moved out of Africa. After the population explosion and expansion, the 7 continents and 4 oceans were already full of human’s footprints. Until today, we are still fighting for migrating to other planets. This is the instinct of all living things to migrating. Not only people, animals are also experts to migrate. From the small invisible planktons to the large swimming whales, they all create great journeys, perform the wonderful drama of nature year after year, without rest for time and tide.
Birds——Fly for Living
Mentioning about migration, first of all, we think of birds. “As the autumn comes, a group of wild geese flies to the south, they form a ‘ren’ for a while, and form a ‘yi’ for another等” this is from the article we learned in the childhood, telling about our most familiar migratory birds. There is also record in the opening monologue of a movie：” this is a story about promise to come back. The birds fly ten thousands miles, experience trials and hardships, only for one purpose——survival. They fly for living.”
The migratory birds fly back to their born places to breed the next generation, and fly to the warm wintering ground with the newcomers in autumn. They repeat the processes, and never betray the promise. The smallest bird in the world is hummingbird, which is as small as a moth, they should also migrate with promise. Their small body contains large energy. They can cross more than 5000 kilometers from the born place——British Columbia in Canada （ the southwest of Canada） to the Mexican city. The female birds won’t set out at the same time with the male, for they should take care of the baby birds until they have enough flying abilities. As the exhausted physical power for breeding recover, they start the back journey with the new lives.
Insects——Pursuing for Food
Flying is not the birds’ patent, the insects fly in a splendid and magical journey. Butterflies are not just living things with gorgeous appearance, but also the practioners of migration’s practice. The monarch butterflies may be the most familiar butterflies for people and the only ones who take long distance migration in North America. These butterflies couldn’t resist the winter of Canada and the Northern America, their larva feed only on the plant asclepin, for the above two reasons, the monarch butterflies set out the journey from generation to generation.
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