Crows often limit their social members of their immediate family interactions, but when they need to expand their relations convey useful knowledge for food, according to a study published in the journal Nature Communications .
Scientists at Britain’s University of St Andrews suggest that crows are able to expand their social networks to facilitate dissemination of cultural features as the use of tools .
Researchers have studied the behavior of New Caledonian crows, a species known for its ability to use small branches to poke into holes in the bark of trees for bugs .
It is believed that this ability is transmitted to other crows from observation, while learning depends on the social structure of the group and the interactions among its members.
James St Clair and his group have used wireless transmission apparatus to continue for 19 days to a population of crows in which live different families, and found that most of the relationships between individuals of the group limited to those birds that Genetic share.
However, when a food source that requires the use of tools appears, the ties between the community and increase quickly shows how individuals who hitherto were not related to each other begin to interact .
This behavior seems to be limited to the same group of birds, according to scientists, they also introduced a food source halfway between two sets of crows without getting both straitened ties.
“Social dynamics have profound implications for processes such as the flow of information, but are very difficult to measure in nature, so we used a new technology transmitters to record the behavior patterns of crows” relates the study published in Nature Communications .
“We have shown that social structure responds quickly to environmental changes and new information can spread rapidly in communities where they live couples, “the work that highlights the” surprisingly limited contact between neighboring communities crows “.
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