The Mysteries of Animal Migration 100, The Mysteries of Animal Migration

Animals in Africa migrate in search of fresher pastures.

Birds migrate to escape the cold winter.

Fish migrate to warm or fresh water to breed, and some to follow microorganisms or fish in ocean currents.

It is difficult to say the accuracy of animal migration, it is generally believed that the judgment of the earth's magnetic field is more accurate, and I feel that the migration of animals does not need individuals to judge the direction, just like you go home from the company yourself, even if you think about something else, you can go home, so the animal's sense of direction to the migration place is determined by tens of millions of years of genetics, similar to hereditary memory, and the judgment of the migration direction is quite natural, and even the innate natural reflex.

It's because of the rotation of the earth! The rotation of the Earth causes June, July and August to be summer in the Northern Hemisphere and winter in the Southern Hemisphere! After November there is a reversal!

Some plants are seasonal, and snakes, rats, insects, ants and the like also change! Some of the animals that feed on these small animals and plants will follow suit, and the higher-level predators will also migrate! That's why the Great Migration of Animal Mobilization has been formed!

In addition, there are migrations due to drinking problems, or herbivores that move periodically due to pasture problems, followed by other predators. Form some big or small migrations! Write it yourself, satisfied!

It is a kind of animal nature, the law of nature's cycles. Some flying insects also have ferric tetroxide in their bodies, so they can sense the earth's magnetic poles and use them to discern directions, even if they are far away.

Birds come and go, it's a habit. The so-called habit has become an instinctive ability.

Instinct, climate, food, and reproduction are all reasons for animal migration.

The climate, the food, the nature.

For food, due to the change of the living environment, for reproduction, the survival of species.

Animal migration is the movement of animals over a certain distance for reasons such as breeding, foraging, climate change, etc. There are periodic and non-periodic migrations. When the environment changes periodically, animals migrate periodically.

The migratory animals are as follows:

Wild geeseIn order to survive, geese migrate back and forth between breeding grounds and wintering grounds every year, and their migration has a strong time rhythm, and the ancient Chinese have long noticed the relationship between migratory bird migration and seasonal changes.

2. Swallow:Swallows are a migratory bird that comes from the south in March every year, as if they had flown back from the south overnight, and they choose a family's house to build a nest and lay eggs, incubate eggs and brood. After a busy summer, when the weather cools down in late autumn, they fly to the warmer south to spend the winter.

SalmonSalmon, also known as salmon, is found in Alaska.

Every year, there is a great migration, where tens of thousands of salmon migrate from the sea to the river, gather around the river to spawn and die.

4, Butterfly King:This large orange-brown butterfly is able to migrate long distances as the seasons change. Every spring, the butterflies always flock to Central America.

All the way to Canada; In the fall, it returns to Mexico by the same route, a journey of 4,500 kilometers that will take several months.

ReindeerReindeer are land mammals.

One of the longest migration distances. Reindeer do not fly as described in fairy tales, and they may be more than willing to have such abilities themselves.

In fact, reindeer have to migrate 6,000 kilometers. They pass through spruce forests and mountains in the north to reach the treeless Arctic Ocean.

Coast, then return the same way.

Animal migration is mainly related to climate and food, such as geese, swans, and swallows among migratory birds, which migrate south every winter and fly back to the north the following spring. Among the animals, wildebeest antelopes will also migrate en masse on a large scale for food, and at the same time, some carnivores will follow closely, forming a spectacular scene of collective migration of a variety of animals. Fish also migrate en masse in order to reproduce and feed, for example, salmon swim upstream every year to spawn, tuna schools migrate en masse in search of food, and even baleen whales migrate en masse in pursuit of prawns.

Migratory animals can be divided into: migratory birds such as sparrows, magpies, house swallows, cuckoos, etc.; Fish migration such as herring, grass carp, silver carp, bighead carp, large and small yellow croaker, salmon, etc.; mammals such as reindeer; Insects such as butterflies, kings, etc.

It depends on where it is, such as Hoh Xil in China, where Tibetan antelopes migrate. The wildebeests, antelopes, zebras and flamingos of the African savannah are migratory. Caribou in Alaska in North America, red crabs in Christmas Island, sandhill cranes in Nebraska, sockeye salmon and king chatter in Alaska, and straw-colored fruit bats are among the migratory animals.

Migratory animals include monarch butterflies and wildebeests.

Swallows, Arctic terns, reindeer.

Wait. 1. Monarch butterfly: The monarch butterfly is a large butterfly that is very common in North America. Every autumn, a large number of monarch butterflies depart from the eastern and western parts of North America and fly south.

2. Wildebeest: Wildebeest lives in central and southeastern Africa, and will migrate westward in search of fresh forage during the dry season.

3. Swallow: Swallow is a typical migratory bird. After breeding, the young birds still follow the adult birds; And gradually integrate into large groups, in the first cold wave.

Arrival in the former Yugoslavia. Migrating for wintering, it is a "nomad" in the bird family.

4. Arctic Tern: The Arctic Tern is a light seabird that can fly long distances. When it is summer in the Northern Hemisphere, the Arctic Tern is in the Arctic Circle.

When winter comes, they will fly south to reach the Southern Hemisphere.

5. Reindeer: Reindeer, both male and female have horns, and the complex branches of the horns are an important feature of their appearance, mainly according to the weather conditions and the abundance of food to migrate.

Animal migration: Animal migration refers to the migration of animals over a certain distance due to breeding and other reasons. Broadly speaking, it refers to the movement behavior of animals from one area or habitat to another.

In a narrow sense, it refers to the group long-distance movement behavior of animals in a specific time and along a certain line in order to meet certain physiological needs in the process of evolution. The migration of animals is divided into cyclical and non-cyclical migrations.

There are many migratory animals in nature, from fish, birds, and mammals.

When it comes to insects, there are some species that migrate, and the purpose of migration is different. Here are a few examples to illustrate the purpose of animal migration:

When it comes to migration, the first thing that comes to mind is migratory birds, and the common house swallow.

It is a type of migratory bird. Migratory birds are a type of bird that regularly migrates with the seasons, and some of them fly thousands of kilometers to migrate. Birds migrate mainly in search of wintering grounds, to escape the cold winters, and to get more food during the winter months.

Bird migration routes are generally similar, but the locations of each migration are not necessarily the same. Birds are also one of the most common migratory animals. Similar to the North American goldenrod butterfly, this insect also undergoes large-scale migrations with the seasons.

There are nomads among the human race.

They live a life of migration and migration. In fact, their way of life is the animal they graze, and they migrate with the animals. Animals that live on the grasslands migrate according to the changes in their food on the grasslands.

The most famous of these is the wildebeest on the African savannah.

In search of food, chasing the great migration of the pastures. It was a shocking sight, as the animals of the steppe migrated in search of enough food and water.

Fish also migrate, and some fish return to their birthplaces to breed, so the concentrated migration for breeding is called migration. For example, Qinghai Lake.

Among the fish.

and the famous salmon.

This is the case. Of course, fish are not the only species that migrate for breeding, sea turtles live in the sea.

The same is the case. Usually sea turtles are scattered all over the ocean, but once it is breeding season, the female turtle will gather on the beach where she was born, climb up to the beach again to lay eggs and breed, and once the eggs are laid, they will disappear into the sea again.

Migrating animals are naturally far more than just the ones mentioned above, but the purpose of animal migration is roughly due to these few reasons, migrating for climate, food, and reproduction.

First, elephants, secondly, swallows, third, East Asian locusts, fourth, fish, fifth, reindeer, they all migrate for foraging or mates, or because of the climate.

Migratory birds, some fish, African elephants, etc., all migrate because of seasonal climate change, or because of water sources and food.

Wildebeest, migratory birds, geese, swallows, and many fish migrate. In order to avoid the harsh environment, survive and eat by yourself.

Wildebeests, migratory birds, geese, swallows, and many other fish, all of which migrate. In order to avoid the harsh environment, allow yourself to survive and find something to eat.

Animals migrate for the following reasons: searching for food, hibernating, escaping bad weather, reproduction, etc.

1. Look for food

Food is associated with reproduction, as most animals migrate to places where there is enough food for their offspring to survive.

2. Hibernation

Hibernation is essential for the survival of some animals, and a good example of this animal is the small brown bat. In the summer, these creatures live in trees, while they migrate to caves to hibernate in the winter.

3. Escape from bad weather

Most migratory birds migrate because of the change of seasons, and the Arctic Tern is a perfect example of this, as this bird experiences two summers in a year instead of one, thanks to its migration.

4. Reproduction

One of the most common reasons for migration is for animals to find suitable breeding grounds, with crustaceans such as many species of crabs living in the deep sea but going to shallow waters to breed before returning to deeper waters. Amphibians like frogs and toads alternate between breeding ponds and large lakes.

What are the migratory animals?

1. Birds

About 18% of the world's 10,000 bird species migrate due to seasonal changes in climate. Most of these birds fly from north to south. Summer in the north is usually the season for birds to forage and breed, while winter is the season for them to migrate south to warmer places.

For example, the Arctic tern migrates from north to south each year, covering a distance of about 12,000 miles.

2. Fish

Unlike birds, fish do not always migrate long distances, as they may end up migrating in the same place. For example, if a fish inhabits a huge lake and eventually changes its habitat, the migration time will be short, however, some fish can travel hundreds of miles away.

3. Insects

Insect migration usually occurs between winged insects, such as dragonflies, butterflies, and locusts. For these two butterflies, the group that started the migration was not the same butterfly that completed the journey. The reason for this is that because butterflies mate and reproduce in this process, the new generation of butterflies is the generation that has completed the migration.

4. Mammals

A good example of this migration is the famous wildebeest migration in the Serengeti National Park in Africa. In addition to wildebeest, other migratory species include zebras and antelopes. Interestingly, these groups can change their direction, but depending on environmental conditions.

Animal migration is to adapt to the seasonal changes of nature and better survival, and I really want to help you look forward to it