Tourists were fascinated by the sight of a small bird cleaning the face of a buffalo bull.

The footage, filmed on August 30 in Kruger National Park, shows an oxpecker bird picking the forehead and nostrils of a buffalo as the mammal remains still.

The filmer writes: ''The buffalo understands the benefits of this bird and happily tolerates it.

''It is amazing to see and understand that there is always a purpose for everything living in the African bush.''

Oxpecker birds live in association with medium to large mammalian herbivores.

The smallest hosts range from warthogs to impala and the largest to rhino, hippo and buffalo.

These birds spend their daylight hours picking and consuming parasites out of the pelage of their hosts.

This video shows one of the wonderworks in nature called mutualistic symbiosis. This was recorded during a safari in Kruger National Park. Tourists were fascinated by the sight of a small bird eagerly going around and picking at the face of a forehead very dangerous and aggressive buffalo bull. These birds are called oxpeckers and little did people know that this bird was actually busy with a marvellous act leading to a great accomplishment for both species. These very useful and helpful birds live in association with medium to large mammalian herbivores. The smallest hosts range from warthogs to impala and the largest to rhino, hippo and buffalo. These birds spend their daylight hours picking and consuming parasites out of the pelage of their hosts. This specific oxpecker took it further and decided to clean the buffalos face around the fore head, around his eyes and showed a lot of interest in both the nostrils of this big old buffalo bull. The buffalo understands the benefits of this bird and happily tolerates it all over his face and nostrils. In the endThe footage this is a win-win situation for both species as the buffalo gets rid of parasites in hard to reach places and the bird gets fed at the same time. It is amazing to see and understand that there is always a purpose for everything living in the African bush.