It is possible that the call warns other squirrels to stay out, but its primary function is to identify the caller to all those who are listening.
This article was originally published on The Conversation, an independent and nonprofit source of news, analysis and commentary from academic experts. Disclosure information is available on the original site.Author: Shannon M. Digweed, Associate professor, Psychology and Biological Sciences, MacEwan University
Individuals spend time gathering cones throughout the summer and fall months, storing them in a central location called a midden. They can be rather protective of these middens, as squirrels are known to steal a great deal from each other. In fact, a squirrel can steal up to 90 per cent of its stores from neighbouring squirrels.
In addition, by communicating who is calling, the rattle can signal to listeners who is more likely to steal from you and thus a more threatening neighbour. Some neighbours may be more likely to steal from you than others.
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