Every year the spectacle of the great migration of animals from Tanzania to Kenya is an attraction for thousands of nature lovers, animal lovers and photographers from around the world.
This year, also because of the global climate change and the great drought suffered in early 2019, the movement of wildebeests and zebras has already begun and according to experts you will see a migration "early" than in previous years. 
The most exciting but also dramatic moment, which is part of the life cycle and regulates the biological balance of the great mother Africa, is the crossing of the river Mara, in the area of the maasai (called Maasai Mara) practically on the border between Kenya and Tanzania. Thousands of wildebeests and zebras have recently set out to prepare to wade the river that divides the great Tanzanian national park of Serengeti and flows into the Kenyan reserve. The migration usually begins at the end of May, with the arrival of the great rains that move precisely from west to east. The phenomenon, however, is not contemporary for all animals, but continues over time, with a migration formed by the set of many herds of herbivores.
Each herd can be made up of as many as 80,000 animals, but most of them are smaller. In June, following the tracks of the Serengeti plain, the wildebeests move towards the Grumeti river and the Western Corridor, then dividing into two large currents: the first crosses the Grumeti river and heads north-east towards the river and the Masai Mara reserve, the other, following the course of the river, heads north-west towards Lake Victoria.When the herds reach the rivers, you can watch one of the most famous and bloody natural spectacles: the passage of the herds to the fords of the Grumeti and Mara infested with crocodiles. Anything can happen, but sometimes you have to wait for hours or days before the hell of hope and hunting can break out. Zebras and wildebeests courageously do not give up migration, but many of them will perish. The muddy rivers and the great currents make the ford even more insidious, but instinct has the upper hand and often the joint action is the one that saves most of the beasts. 
On the banks, then, we can see also the felines, ready to wait for the animals exhausted and tried by the ford, and the vultures, ready to eat the carcasses. An epic documentary scenario, which those who love Africa can not help but dream of living at least once in their lives, as from the splendid images of one of the most important Italian naturalist photographers in Africa, Paolo Torchio, whose photographic safaris are among the most requested by tourists and wildlife enthusiasts. (http://paolotorchio.net/)

Translated with www.DeepL.com/Translator