Why do animals migrate? What is the reason behind this?

The reasons for animal migration are: breeding, looking for food and natural disasters.

Some migratory birds return to their breeding grounds every spring and move to the southern wintering grounds in autumn for seasonal and breeding reasons, and migrate periodically along a certain route in the horizontal direction. The migration route of each bird is the same, usually along the food-rich near-water area.

Mammals also migrate periodically because of seasons, reproduction and foraging. For example, northern reindeer migrate south to the coniferous forest belt in winter and return to the food-rich northern tundra in spring. In addition to level of migration, there is vertical migration. For example, in the cold season in mountainous areas, animals often move to low-lying areas in search of food. Many deep-sea fish and invertebrates spend part of a year in deep sea and shallow sea respectively.

Extended data

For food, the most spectacular animal migration scene on earth will be staged in Africa, because there are millions of horns, hundreds of thousands of zebras and antelopes forming a huge team, marching north from the Serengeti Reserve in Tanzania to the Masai Mara National Park in Kenya, with a hiking trip of more than 3,000 kilometers. At the same time, on the road, don't just cross the grassland where lions and leopards are located.

Among these millions of immigrants, only 30% of the lucky ones can return to their original places, and the people who came back with them gave birth to 400,000 new lives in this exciting journey. From February to May, 65438, African herbivores lived leisurely in the reserve of Serengeti National Park. There are abundant aquatic plants here, which provide them with enough food. From the middle and late May of each year, the Serengeti National Park in Africa has ushered in the dry season.