There is someone controlling the camera. They move it and zoom in when there is something to see. The best time to watch is late evening or early morning (when it's daylight in Africa). As I type this, it is ~1:15 AM in Africa (it's 6:15 EST time). About 11 PM EST is a good time if you are up. If not, check it out early in the morning. I've got lots of animal screen shots, most of which I got during the early morning. The giraffe pictures I got around midnight last night, but I've also seen the giraffes around 7:30 AM EST.