This threat display occurs when other males are near. Buffaloes are often accompanied by yellow-billed oxpeckers which feed on ticks in the buffalo's ears and elsewhere on its body. Oxpeckers have a thick yellow bill with a red tip. They have become rare outside the Park in areas where cattle dips are used. Zebras Zebra are highly social animals, forming stable family groups with strong bonds between individuals.
Stallion usually walk behind.
The harem may be taken over when the male becomes too old, but this doesn't happen often as zebras live for about 20 years in the wild. The first time a filly comes in heat she attracts a lot of stallions who fight for her. This goes on for about a year until she conceives. Then she stay with the inseminating stallion and becomes one of his harem. She has difficulty joining the new herd as other female are often aggressive, so the stallion protects her during this time.