Is the story of "Flying antelope" true?

In this paper, the scientific name of impala is gray impala. Knowing the daily life habits of impala, we will understand that in reality, the gray impala, including several other impala, can't have the group of seventy or eighty heads described in The Flight of Impala, and there is no such thing as sheep.

For these animals who have no organization and discipline in their daily life, when they come to the end of the road, they can't take care of each other. In addition, the dominant force of evolution is not group selection, but individual selection. Although "flying" is conducive to the permanent continuation of groups, it is impossible to evolve, which violates the basic principles of modern evolutionary biology.

Extended data:

Impala flight is an oblique upward throwing motion, which can be divided into vertical upward throwing motion and horizontal uniform linear motion regardless of air resistance. When the initial speed is constant, the larger the take-off angle, the greater the initial speed of vertical upward throwing and the smaller the horizontal movement speed.

The semi-impala has a small take-off speed and a large take-off angle, while the old impala has a large take-off speed and a small take-off angle, so the horizontal movement speed of the old impala is higher than that of the semi-impala. Although the old impala takes off a little later than the semi-impala, it is entirely possible to catch the semi-impala horizontally and catch it when it falls.

Impala's flight is not groundless, but has a sufficient physical basis. But the fly in the ointment is that the old impala is not the kind of impala that is caught at the highest point of its own jump. To really accomplish such a feat, it takes two impalas to cooperate perfectly and make few mistakes, that is, all previous efforts have been in vain and it is difficult to survive.