2009-06-08 15:49 When mobbing predators, Siberian jays use over a dozen different calls to communicate the level of danger and predator category to other members of their own group. A Swedish study from Uppsala University, published in the Proceedings of the Royal Society Biological Sciences, shows birds have evolved call systems that are as sophisticated as those of primates and meerkats.
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2009-06-08 11:04
Fotograf/Källa:Michael Griesser
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Sammanlagt har lavskrikor över 25 olika läten. Vissa är specifika för speciella situationer, medan andra är mer allmänna. Foto: Michael Griesser. /
Siberian jays can possess an extraordinary large “vocabulary” of over 25 different vocalisations, some of which are specific for a situation while others are uttered in various contexts. Photo: Michael Griesser.