I ask Gunton if, should the species extinction situation gets worse, we will ever see indri fleeing from deforestation, or elephants running from poachers instead of their natural carnivores, or harvest mice from combine harvesters--all readily visible human impacts that are usually avoided in the series.
Caption: LEFT: The indri was a major find for the BBC's Natural History Unit 50 years ago Planet Earth II saw it return to our screens; ABOVE: online searches for Christmas island red crabs went up dramatically following their appearance
The indris only come to ground when they have a sore stomach, which they cure by eating soil, and they drink water that has collected on leaves," explains Etienne.
Forced inland from the degraded rainforests of the coast, the indri has found shelter on the higher ground of the Analamazaotra Special Reserve (popularly known as Perinet).
Perinet is home to nine species of lemur, including the indri, 11 species of tenrecs, 24 species of amphibians, including the golden mantella frog, which is endemic to the reserve, and 109 species of birds including the ground roller, the brown mesite and the very rare Madagascar red owl, which was not seen for decades.