... to the display. In this case visual signalling is effective as it is easily detected by the other sex, making the whole process more efficient. It also requires, in some cases, a vast amount of energy, for example the peacock requires effort to first display the brightly coloured feather, but once this has been done little effort is needed to uphold this display. Visual signals are also often used in conflict situations where animals are able to express there disliking of the opposition. This is done by many different animals, for instance, canines will often bare there teeth as a warning. This allows the opponent to assess the size and strength of the other individual as it can then be seen which individual is more likely to succeed in combat. This is often an effective way of claiming territory as it allows animals to keep others at bay to avoid losing ...

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