A musth (usually) male attempting to prevent other males from obtaining access to an estrous female. To be considered a Guarder a male must be responsible for maintaining proximity to an estrous female and not avoiding any other male present. Successful Guarding involves staying within 5-15 meters of the estrous female and threatening rivals who try to approach her.
A female in estrous is in Consort with a male in musth. The clip begins as the female begins to walk. She takes 6 steps before the Guarding musth male begins Move-Toward her; he is Maintaining-Proximity. She takes 16 steps in total before stopping in the shade of a tree, where she Waits for him.
Her family members move to join her. The musth male takes 20 steps and stops within 3 meters of her. They both stand alert and Waiting for someone to make the next move. (Maasai Mara, Kenya)