This is a family group.  The elephants I saw usually travelled in small family
groups like this.  Bulls would often travel alone, or attach themselves to a female.
Occassionally the groups would be quite large.  It was hard to get too close
to a group like this, because the females were protective of their young.
The bulls were often approachable, if they were use to people; that usually meant
they were from Mana Pools, where there's no hunting.  Areas around the park allow hunting
and elephants from those areas would often be very skittish when they caught our scent.