Calving season
Herds gather on the short-grass plains of the southern Serengeti and Ndutu, usually between January and March, when large numbers of calves are born and predator activity is intense.
River crossing season
From around July to September the herds face the Grumeti and Mara rivers. Crossings are unpredictable, dramatic and require patience and a good guide.
Tanzania or Kenya?
Tanzania offers the largest share of the year, including calving and the western corridor. Kenya's Maasai Mara is the classic destination for the July to October crossings.
How long you need
Allow at least three nights in the right sector, and ideally more, since crossings cannot be scheduled.
