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A record of the 6th Netherlands Chimpanzee Expedition. Part 1 (18 min) shows general ecology and behaviour. Part 2 (24 min) shows weapon use.
Prey-catching behaviour. Analysis of the visual-key-stimulus ‘prey’ through experiments with dummies (worm/anti-worm configuration). Behaviour with changing stimulation-background contrast. Direction,...
Self-conditioning of the common toad to prey smell and modification of the innate releasing mechanism for prey capture behaviour. ‘Hand conditioning’. Fine differentiation of prey dummies by...
Ponerine ant colonies are taken from their natural habitat and studied in the laboratory. They are individually marked and their behaviour and social organisation are studied. Shows the sociograms of...
A film about visual deception - the way camouflage is used by predators to conceal themselves from prey, and by prey from preditors. With cunning and with camouflage, by colour or design, shape or posture,...
The classic experiments of Konrad Lorenz are reproduced, showing that ducklings will accept as ‘mother’ the first moving thing that is presented to themn. This imprinting is strong enought to persist to...
A community of a rare type of monkey, the woolly monkey, is preserved and studied in England, in conditions which allow the amimals to relate to each other in the same way that they would in the wild, and...
In a series of interviews, Konrad Lorenz explains aspects of his research into ethology. He discusses his studies of aggression, ethology, imprinting and motivation, and addresses criticisms of his theories.
Demonstrates the effect of removing the ‘corpora allata’ from the head of the Colorado Beetle. This operation, which is the central theme of the film, is performed without the aid of a micromanipulator....
Examines the development of pupal cocoon recognition in the brood-nursing behaviour of ants ('Formica spp.). Shows experimental procedures that purport to demonstrate that 1) recognition is not innate but...
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