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To survive, animals must always be aware of their surroundings and they adopt different communication strategies to adapt to changing environmental conditions. This paper describes some vocalization adaptations. Horses in open pasture usually communicate visually but when placed in separate barn stalls, with restricted visibility and mobility, must rely more on their vocalizations, referred to as barntalk. In addition they rapidly learn to recognize sounds from unseen objects of interest such as a feed cart or their owner. In some cases animals utilize a new vocalization, Asiatic wild dogs (Dholes) have developed a short whistle to keep contact among their hunting pack when visibility is reduced by underbrush, while not interfering significantly with listening for their prey. Nowhere is there more vocalization adaptation than in a jungle, with limited visibility, difficult mobility, and the added complication of many other competing sounds. As a result Sumartran rhinos have developed a far more complex vo... |
