A lot of wildlife watching is a matter of luck. You can try to bias the dice in your favour by various means. Our guide Stephen had kept the radio on, and was listening in on conversations between Landrovers across the Maasai Mara, hoping to pick up pointers on which way to go to see something interesting. As he sped along, I saw a weird line across the horizon.
You can see how it developed. Sometimes the dice come up sixes for you, and you get to see something you had never even heard of.