By Rebecca Lewis @RebeccaSLewis
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The aggressive black eagle pair teaches their young a valuable lesson as it flies the nest.
The birds somersault through the air as they peck and claw at each other.
Wildlife enthusiast Ernest Porter, 23 from South Africa, has been tracking the birds for two years at the Walter Sisulu National Botanical Gardens.
A chick begins to fight for its life a year after being born, competing and killing its sibling before fledging.
As it reaches adulthood the parents violently force them off the nest to fend for themselves.
Ernest said: “The male is called Thulani and the female is Emoyeni, their offspring’s name is Jono.
“I was very lucky to get the best moments on film including a backflip and the moment Thulani, the male, dragged the juvenile down and they both fell to the ground.
“The last day I saw Jono I left early and when I came back the next day I knew that he was gone, I knew he was gone before I saw it.
“I was not disappointed as I spent a lot of time with this juvenile, so I felt that they did a good job and I learned a lot from him.
“They are very aggressive eagles, I think that it's part of their training as they live very vicious lives.
“They have to have a foundation to learn and defend themselves one day as they have to protect their own territories and any eagle can take over their territory and they'll need those skills to protect it.”