He points out that creatures are programmed to find food and to avoid predators.

ECONOMIST: Computing and biology

Experts were amazed that the tagged bat managed to find another colony and avoid predators during the journey.

BBC: Greater horseshoe bat

Severino had built up a mass of knowledge on where to find water, which nuts to eat and where to find them and how to avoid predators, the BBC's Brazil correspondent Tom Gibb reports.

BBC: Brazil hunts for unique lost bird