On the steppe, Bi Fang led Harley to the north.

Sparse yellow hay spilled up to the thighs.

If you are wearing shorts and your skin is a little delicate, you will inevitably be covered with white marks after a hike, and if you are unlucky enough to encounter thorny plants, blood marks are inevitable.

In case of poison, it is even more likely to hit GG on the spot.

Bi Fang's words about teaching something different have not yet had a chance to manifest at this time.

Just chatting with the audience during the hike, introducing some of the African savannah scenery, as well as some of the food and scenery they may encounter at this time.

"In fact, the beginning of October is a very special node for the African savannah in the northern hemisphere, and during this time period, we can see a lot of things that we usually can't see, which can be said to be the best time period."

[How do you say?] 】

[It's a great migration of animals, right?] 】

[I've been to Kenya, the Great Migration usually starts in June and July, and it ends in September, and now it's October, how can you still see the Great Migration. 】

"If you want to talk about the Great Migration, it usually starts in June and July." Bi Fang, who saw the barrage, did not shy away from admitting this, but he smiled again, "However, the Great Migration comes quickly, and it comes back quickly." ”

"We really can't see how the animals migrated over, it's a few months late, but how they came back, we can see it clearly now, just right."

Kenya has a special geographical location.

It does not belong completely to the Northern Hemisphere or to the Southern Hemisphere, but straddles the north and south, with the equator in the middle.

This means that when the northernmost part of Kenya's grasslands is dry and the ground is dry and cracked, its southernmost tip may be wet season when water and grass are abundant.

Such a significant difference has created the most shocking scene in the entire natural world - the great migration of animals from north to south.

The dry and wet seasons in the African savannah are the same as the summer times in all hemispheres.

As a result, the Serengeti National Park in northern Africa is about to usher in its dry season from mid-to-late May.

During this period, the aquatic plants in the park gradually withered, and the lack of food could not meet the needs of the large number of herbivores.

Plus this timing is very coincidental.

Spring is coming, everything is recovering, and it is the season of animals to mingle with each other.

Anyone who has seen the animal world will be familiar with this sentence.

For most herbivores, their breeding season is concentrated between March and May each year.

The herbivores of the African savannah are no exception.

Survival and reproduction are the instincts of every living being.

The so-called estrus period seems to be a violation of the instinct of biological reproduction.

Some people believe that if animals could reproduce all year round, just like humans, the number of such groups would be greatly increased.

However, this thinking is wrong.

In fact, the estrus period of animals is not a limit on the number of populations, but to improve the survival rate of offspring and increase the population.

The laws of nature are very different from human society, and "survival of the fittest" is an eternal and unchanging truth in nature.

In spring, everything recovers, the temperature is suitable, and the comfortable environment provides shelter and food for the animals.

Most animals also choose to be active during this season and then give birth during the summer months.

In the summer, the plants are in full bloom and the climate is more suitable.

If you give birth to your cubs in winter, there is a high risk that the cubs will freeze to death if you don't have enough food.

Herbivores become more active with plenty of food, and carnivores can hunt more easily, so that their offspring can survive better.

Mating and reproduction is an extremely physically demanding thing, some extreme animals will choose not to eat at all when they are pregnant and wait for childbirth, and the vast majority of female animals are also in a weak state after giving birth, and need to be recuperated in time.

The so-called good steel should be used on the blade, and the same is true for the reproduction of animals.

Therefore, all the energy has to be saved up in a wave and released in the spring when the survival rate is highest.

Of course, not all animals choose to be active in the spring, which is actually related to the gestation period of the animal, for example, the deer are in the autumn.

Due to the long gestation period of deer, it is just right to give birth to young in the spring after the autumn activity, which actually follows the above pattern.

The arrival of drought.

The number of ethnic groups has skyrocketed.

The two reasons are superimposed, and the balance between supply and demand is seriously broken.

In order to survive, herbivores had to start migrating northwest of the Serengeti, chasing grass and water.

The herbivores ran out, and the carnivores were no exception, and then, under the action of the food chain, almost all creatures, large and small, had to move.

It's a spectacular spectacle.

Millions of wildebeests, hundreds of thousands of zebras and antelopes form a huge procession, from Tanzania's Serengeti Reserve to the north to Kenya's Masai Mara National Park, trekking more than 3,000 kilometers.

Not only do you have to pass through the grasslands where lions and leopards are ambushed, but you also have to watch out for jackals and crocodiles congregating on both sides of the narrow Mara River, predators ready to share in the feast to come.

A large number of animals cross the border across the Mara River to the Masai Mara, and this continues until September and October.

Even if you can see it now, there may only be a few small groups scattered, and it can't be called a great migration at all.

[But why can I see the return trip?] 】

[Will this live broadcast take several months?] 】

Bi Fang shook his head: "Of course not, we can see the return journey, because this kind of animal migration, not like migratory birds, go in autumn and return in spring, but only stay for less than a month." ”

"Because soon, the prairies of the southern hemisphere will also have a dry season."

"And the Maasai Mara National Park, where the animals migrated, is only one-tenth the size of the Serengeti."

"It's not enough to sustain a large number of herbivores."

"From mid-October, when the Serengeti savannahs in Africa return to the rainy season, the grass starts to turn green under the moisture of the rain."

"At this point, the animals have to move back to the Serengeti after a short period of shelter, and the whole process lasts about a month, and it almost ends in December every year."

"In December, the animals return to their homes and begin to reproduce and recuperate, gradually replenishing the number of their species lost on the way in preparation for the following year."

"Of these millions of migrants, only 30 per cent of the lucky ones make it back to their starting point, and they are followed by 400,000 new lives born during the thrilling journey."

"So, in a few days, we may be lucky enough to see this shocking scene."

[Good guy, if you're unlucky, you're going to rush back just past (dog head)]

[Not necessarily, everyone is back, isn't there less grazing, maybe it's just right (dog head)]

[Speaking of which, we can still see the great migration of animals]

[Okay! 】

【Forbidden to be good】

As far as the eye can see, all the grass is withered and yellow, and there is not a trace of life.

The ground is very hard, and although it is not cracked, it is also a sign of a lack of water.

If there is plenty of water, the ground should not be as hard as cement, but softer and clear to leave footprints.

But now, even the cars of the conservation center can't leave a trace, which shows how dry and hard the land has been due to lack of water.

However, animals can still be seen occasionally passing by on the grassland.

The sound of laughter resounded in the grass, and a brown rat disappeared into the narrow rocky cavern, leaving behind Halley, who had been digging into the earth at the mouth of the cave.

After walking for several hours, Bi Fang could clearly feel his lips dry.

Harley, who had not caught the mouse, began to become impatient, and began to lean towards Bi Fang, trying to "lie down".

The cheetah is a creature that doesn't like to walk long distances, and it is quite thorough at the moment.

Facing Bi Fang, who was still moving forward, Harley, who had failed to lie down several times, quickly advanced a few steps, walked in front of Bi Fang, lay down directly, fell to the ground, and let Bi Fang walk by, no longer got up, just heaved his chest and screamed a few times on the ground.

[I can't walk anymore]

[Is it not working now?] 】

【Swing rotten (eat watermelon)】

Bi Fang smiled, but he didn't force it, but looked around, found a small dirt slope, and walked straight towards the dirt slope regardless of the cheetah on the side.

Harley on the ground raised his head to look, but his eyes were blocked by the grass, and after waiting for a while, he didn't see Bi Fang's figure, so he had to stand up, and then he saw Bi Fang standing on the dirt slope, and hurriedly ran over, and then continued to the ground.

But at this time, Bi Fang did grab the back of its neck and dragged it to the hillside.

"Cheetahs spend most of their time lying down, and during the hottest parts of the day, they are least active and rest under the shade of large trees."

"Although the weather in Kenya is not very hot, it does not affect its tendency to lie down, and they do not like long expeditions, so it is time to take a break."

"But the native cheetah is a very timid animal, it will be very alert when it walks, and stop from time to time to look around to see if there is any prey to hunt."

"On the other hand, it also has to prevent other beasts from preying on it, usually resting at noon, and when it takes a nap, it will even get up every 6 minutes, and it will get up to check and see what dangers are around."

"So we need to make it interesting to cultivate this habit now, in some places where the line of sight is better, that is, the altitude is relatively high, to develop the habit of observing first and then resting."

"Of course, it definitely won't work once, but after a lot of times, it will always understand."

On the dirt slope, Harley sat down under the pressure of Bi Fang, and out of animal nature, he looked around curiously, and then followed Bi Fang and stopped to rest under a large tree.

Bi Fang cleared out the open space, sat down, and walked for a long time without much discomfort.

Dry mouth is dry, but mild, not to the point of dehydration.

[Harley's reaction was too funny]

[I've never been so tired in my life]

[Harley: What are these two legged beasts doing (dog head)]

[I want to touch it]

[When will I also go to the African savannah!] Maybe you might even run into Harley.]

"Don't look at me as if I'm not afraid of cheetahs, but that doesn't mean that cheetahs aren't a threat to adults."

Bi Fang directly grabbed Harley's claws on the side, compared with himself, although the cheetah is slender as a whole, just looking at the arms, it is not too thin.

"The arms of ordinary people are actually no thicker than the forelimbs of cheetahs. The cheetah can accelerate to 110 km/h in 3 seconds, which means that he can run 60 meters first in a 100-meter race against Usain Bolt, and the winner will be the cheetah. ”

"In addition, cheetahs often roll with their prey after chasing them at high speed, so don't think that his body is fragile, and feline bones are much harder than humans."

Then Bi Fang opened the cheetah's mouth again, and reluctantly photographed its canine teeth.

"Cheetah's teeth are smaller than leopards, but they are sharp enough, because the small head allows for a higher running speed, and the small head naturally has small teeth, and naturally does not have the powerful jaws of lions."

"So cheetahs usually can't bite through the throat of their prey, but suffocates their prey like pincers."

"But human skin is not covered with hair, and it is thinner than wild animals, and the throat is small, and the cheetah's 3.5 centimeters of exposed canine teeth are enough to bite through the human throat."

"Usually, a person who bites through the throat will not die immediately, but will become more energetic due to inhaling a lot of air, but the artery that bites the neck will not stop bleeding, so there is a possibility of death due to excessive blood loss."

"Cheetahs can have a bite force of up to 340 pounds, leopards 550 pounds, African lions 1,050 pounds, Siberian tigers 1,100 pounds, and spotted hyenas up to 1,300 pounds."

"In this comparison, it doesn't seem very high, but it's remarkable to compare it with the big wolf dog German Shepherd, because the bite force of the German Shepherd is 230 pounds, which is 40 kilograms, which is only about two-thirds of the cheetah's cheetah."

"So if you want to kill a cheetah, you must first be able to kill a large canine."

"And canines don't have the claws of felines, and although cheetahs don't have as many claws as leopards and tigers, they are still very threatening to a naked human."

"In particular, the claws under the thumb of the cheetah, not only retractable, but also relatively long, can help hook and cut the prey, often watch feline documentaries should know, sometimes the cheetah chases the prey, the prey is suddenly pulled apart, this is the credit of its thumb claw."

Bi Fang squeezed the cheetah's thumb claws out of the palm of his flesh and showed it, which was a reminder to the audience, don't be really stupid and think that the cheetahs in the wild are cute and want to go up and touch them.

He has too many fans, and it's no surprise that there are some strange things in it.

In the process of resting, Bi Fang was not idle, he picked up some bark, kneaded the fibers out of it, and made it into rope for later use.

After resting for an hour, Bi Fang continued to hurry with Harley, who had almost recovered, until three o'clock in the afternoon, when Harley could not hold on again and was ready to put it in place, he finally found a good target.

A herd of baboons.

"Found a source of water."

(End of chapter)