Even after tracking the migration movements over many years, it is still completely unpredictable as to where the migration will actually be at any given time. Records show a distinct pattern of where the animals are likely to be, but the actual movement is open to the vagaries of the rain, the grass and the animals themselves. There is resident game throughout the Serengeti National Park and its conservancies, as not all the herbivores migrate.
The large cats and other predators are territorial and so take advantage of the great herds passing through their territories but do not follow them on the migration. Many permanent Serengeti safari lodges and camps offer magnificent year-round game viewing. Outside of the migration times, they also offer discounted rates.
During the migration time in each area, the tourist population increases, as does the number of vehicles all trying to see the same spectacle. Whereas out of season, there is still great game viewing without the masses of cars searching for it. With a silent signal they will all turn and gallop off, chasing the thunderstorms only to return to the same place the next day.