"You're all holding us up!" Chill laughs, clearly this is an argument that happens often. He yells something in an African language which is answered with a hail of candy from the other researchers and playful grumbling.

Dinner's a fairly informal affair - a buffet of both local and more European foods with everyone helping themselves and sitting wherever. Chill seems to be the local den mother, nudging and where needed, shoving chattering researchers to get them to at least sit down with their food.

Judging from the size of the table, there's at least half a dozen people missing from the group.

Chill raises a glass. "Ladies, gentleman - a toast to Mr Todd and Miss Simmons for their generosity. Because of them, we can afford the Maasai Mara expedition to Kenya."

There is a lot of cheering and more than a few hugs and slaps on the back for them both.