The fully grown white-tailed titi is about half a metre tall not counting the tail. Their backs are grey but the front has a nice rusty colour, and there’s a white stripe across the forehead. We see them at different times, always two parents and a cub.
A larger monkey is the red howler monkey, a bit smaller than the black one, and very elusive. We only see them from a long distance, at night they’re just like a lump up in some tree far away.
And once we see the tiny pygmy marmoset running like a rat up a tree trunk. And not far away from that encounter we discover a wolly monkey hiding high up in the canopy. The largest animal we spot in the jungle.