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Summary Chimpanzee at a zoo filmed gesturing at the lock on his enclosure to get a visitor to release him.
The video shows the chimp pointing its finger at a window bolt and mimicking the movement required to open it.In one gesture, its enterlaced fingers are reminiscent of the American Sign Language representation of the word gate.A visitor, who recorded the interaction at the Welsh Mountain Zoo, understood the signing as a direction to free him.He can be heard saying: He wants us to lift the window up.Peter Dickinson, a worker at Welsh Mountain Zoo, has written about using sign language with animals as part of their enrichment programme and has previously observed chimpanzees at the zoo trying to comunicate with visitors.
