Hi Carel,
I have just heard from colleagues travelling from Karatu to Serengeti, that there are wildebeest all the way from Oldupai Gorge to Naabi Gate, as well as a massive 'wall of wildebeest' moving through the woodland near Maasai and Loliondo Kopjes. They look like they are heading north to Seronera, but with some good rain falling yesterday evening, who knows where they will head!
Oli