On the beach where the sun shines brightly, a group of crabs are chasing and fighting each other. Yeah? Is the truth really so cute? In fact, this is a ruthless killing, natural selection. A bird with a broken wing during migration was left here, with no companions and no hope of flying again. A crab tried to get close to it, and it dragged its half-broken wings along the coast desperately, keeping its eyes fixed on the sky. Unfortunately, here is the world of crabs. As soon as the camera turns, it has become a gourmet feast for all crabs. As a bystander, you can't even see what it looked like before it died. The crabs surrounded it tightly. They were competing, they were revelling, sadness and joy, death and life existed forever in the same picture.
This is actually a post-reading insight into the documentary "Migrating Birds". This documentary truly shows the magnificent process of bird migration. Migrating twice a year, thousands of miles away, and flying at the risk of life, people are moved and brought to tears. Migration is not only about physical strength and mentality. It is a life-and-death test involving violent storms, avalanches and mud, threats of natural enemies, and hunting by humans. The reality is cruel. Behind the flight in groups in migration is the abandonment of sick, weak and dead companions, and a lucky escape from various unpredictable disasters and misfortunes. Those who survived are lucky and helpless; and those who die should be hopeless. I have always felt that the emotions of animals are also delicate and rich. They also have friends and family members, and they can also feel the sorrow of being abandoned. I also hope to continue to live and feel the wonderful life.
What puzzles me is what motivates their perpetual, adventurous migration. There are two credible theories. One is that birds originated in high latitudes, and the invasion of Quaternary glaciers from north to south forced birds to migrate to the south. When the glaciers retreated in summer, birds could regularly reciprocate to their breeding grounds. and wintering ground, thus forming a migration behavior. The second is that birds originated in tropical forests in the south, and the mass reproduction of the population increased the demand for food. Therefore, ecological pressure caused some birds to spread to the northern glaciers in summer, and return to the glaciers when the glaciers came. Overwintering in the south, over time, a regular migration behavior has been formed. Both theories are speculated from the perspective of historical evolution and are supported by certain evidences. Other scholars have found through experiments that migration is a part of bird life instinct and is regulated by its internal physiological factors. This claim is supported by the documentary. Here, new migratory birds don't need to be taught or practiced, they instinctively know when, where and how to migrate. Perhaps, migration has been internalized by the influence of history into a mission of survival. There is no coercion or complaint, they just follow their instinctive perception and use migration to gain the chance of survival and reproduction.
Why live? Why die? The cycle of heaven and the earth, the pure pursuit of survival, has its own heaven and earth.
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