I thought at first that these might be elephants, but there is one whose neck is seen stretched out a bit, and the high
shoulders on most of the slightly closer animals convinced me they were wildebeests. Does anybody think differently?
Wildebeest sounds right to me. You can see the typical hunched shape of grazing wildebeest on a few of them, where the back slopes up to the shoulders, and then the neck drops down at a sharp angle.