BBC - The Trials of Life : Talking to Strangers (1990) DVDRip XviD AC3 - MVGroup Free & Full Download

Broadcast 6 December 1990, this episode concentrates on animal communication. In Kenya, Attenborough accompanies a tribesman who calls to a honeyguide, which in turn answers him and leads the pair to a bees' nest. The tribesman extracts the honey, and some is left to reward the bird. African hunting dogs are shown hunting gazelles, of which the target is the individual that leaps lowest. Larks evade merlin by sending a similar message: by continuing to sing while being chased, it tells the pursuer that its prey is fit and therefore will be difficult to catch (see handicap principle). (In 80% of cases this turns out to be true.) Vervet monkeys' cries are among the most complex.

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