#videos | African grey parrots help each other for free. But why?
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Jaco gratis help each other and do not envy those who have more food
African grey parrots Jaco was the first bird species that understand when another animal needs help and actually doing it. This puts Jacko on a par with bonobos and orangutans. But gorillas and chimpanzees, this test could not pass. And cognitive abilities are very high. The results of a study published in the journal , also says that Jacko assist relatives without asking anything in return. According to scientists, this behavior occurred only a few times in the course of evolution.
an Experiment in altruism
The Researchers conducted an experiment, the essence of which was that the two birds which were placed in transparent boxes with a hole, provided the opportunity to exchange tokens for which it was possible to get food. In the experiment, in addition , took part of the mountain Ara. In total, the study involved 16 birds of 8 animals each, which were divided into pairs. Each bird was given lots of tokens — small metal washers — and learned to pass their neighbor through a hole in the wall. In front of the transparent box were holes through which birds could interact with objects and with researchers. The birds could communicate with each other through a third hole in the septum separating them.
A month Later, after the birds have learned to give each other food through a hole in the wall, the scientists shut down one of the holes, and the tokens were given only one bird. The experimental conditions were as follows:
Image describing the experiment presented in the journal Current Biology
The Concept of sharing understood as Jaco and Ara mountain, but only grey deliberately passed tokens kinsman, that he was not hungry. The same behavior was observed when the role of birds swapped. The more tokens issued by the bird, the more she received in return. In the experiment, seven of the eight Jaco gave his partner tokens. Mainly, that the kinsman, who had the most substantial connections.
The Researchers also noted that grey parrots have not experienced the envy of the partners, who had more food. The reasons for such behaviour in grey parrots have been associated with monogamy and also with the necessity of close communication, through which birds survive in the wild. Recall that different types of often found in the animal world, but the reasons for this behavior are not well understood. One of the most famous is the theory proposed by evolutionary biologist Richard Dickinson, according to which there may be a gene responsible for . Anyway, the ability of grey parrots free to help each other is unique among birds.
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