Our next story concerns white rhinos, the largest species which can weigh more than 7,700 pounds.
There are two sub-species of white rhinoceros, northern white rhinos and southern white rhinos.
The northern ones are on the brink of extinction.
These are believed to be the last two left in the world, and they're both females.
Southern white rhinos were in similar danger in the late 1800s'.
At one point, there were believed to be fewer than 50 of them, but thanks in large part to the work of a nature reserve in South Africa.
There are now thousands of southern white rhinos.
Because they're still threatened by poachers, illegal hunters, dozens of these large animals have been flown to another African park, where it's hoped they'll reproduce and thrive for decades to come.
Forty hours and some 3,400 kilometers.
Thirty white rhinos complete a long journey from South Africa to a new home in Rwanda.
It's the largest single transfer of the species, and a move to replenish the white rhinos struggling population.
One largely devastated by poaching since the 1970s'.
The journey was no easy feat.
White rhinos are one of the largest land mammal species and can weigh up to two tons.
Following months of preparation, the partially sedated rhinos were transferred from South Africa Phinda Private Game Reserve.
They boarded a Boeing 747 to Rwanda, to their final destination, Akagera National Park,
a space that the staff of African parks believes will provide a safe haven for the threatened species.
White rhinos are being persecuted on the continent. Their numbers -- they are not stable.
They are on a knife edge. It could go either way.
If something happened to Kenya or to the Africa on this scene of white rhinos, that is where the majority of white rhinos are.
Then white rhinos are really on the brink of extinction.
So, it makes no better sense than to bring them to safe areas, areas we know where they would thrive.
Gruner says the animals will be safer here than they were in South Africa, where he says three rhinos daily are killed by poachers.
We brought black rhinos here in 2017. They are thriving.
We brought the lions here. They are thriving.
Poaching remains the primary threat to these animals, targeted for their horns.
There are only about 20,000 southern white rhinos remaining, considered near threatened.
And only two females of another sub-species, the northern white rhino, on the brink of extinction.
The 30 white rhinos are welcome editions to the park, which has seen a decline in tourism during the COVID-19 pandemic.
White rhinos enjoy grazing in open spaces, so visiting tourists can expect to get a good look.
The white rhinos are going to be seen in the open spaces by almost all the tourists.
So, it's going to be something that will really help a lot on the tourism side.
Initially placed in two large enclosures, authorities say the rhinos will soon be able to roam the expansive park with plenty of room to grow.