Navigation Links
Siberian jays use complex communication to mob predators
Date:6/8/2009

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.

Most prey immediately escape upon detecting a predator. However, when encountering resting predators, many prey approach and mob predators despite the associated risk. While mobbing predators, prey utter mobbing calls, which have been suggested to vary depending on risk or predator category. The new study from the Department of Ecology and Evolution, Uppsala University, shows that Siberian jays adjust their mobbing calls depending on both these factors simultaneously. According to the study, both factors matter since they determine the risk posed by the resting predator.

"The chatter of mobbing jays is rather complex. The birds use over a dozen different calls, some of which are specific for owls and other for hawks, the two main predator categories of jays," says researcher Michael Griesser.

Moreover, jays adjust their calling depending on group composition. Family groups utter much more calls than groups that only consist of unrelated individuals. The only other animal species with a comparably rich vocabulary when mobbing predators are meerkats, a small mammal that lives in large family groups.

Together with earlier published findings, this study demonstrates that 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.

"My study supports the idea that the need to survive encounters with predators might have played an important role for the evolution of complex animal communication," says Michael Griesser.

Not only our ancestors but also other family group living animals outwit their predators with the help of their cognitive abilities. Lowering the risk of relative of being killed benefits the propagation of the own genes through kin selection. In contrast, animals that live in anonymous groups rather rely on the selfish notion that other group members could become the target in the next predator attack, and therefore have no such communication systems.


'/>"/>

Contact: Michael Griesser
michael.griesser@ekol.slu.se
46-073-705-3097
Uppsala University
Source:Eurekalert

Related biology news :

1. RV Polarstern on its way to East Siberian Sea
2. May 14 AAAS Lecture and videoteleconference on artworks by Siberian schoolchildren
3. Siberian jays can communicate about behavior of birds of prey
4. Woods Hole Research Center to lead undergraduate initiative in the Siberian Arctic
5. EMBL scientists develop first fully automated pipeline for multiprotein complex production
6. Caltech scientists control complex nucleation processes using DNA origami seeds
7. First tri-continuous mesoporous Silica complex structure developed in Singapore
8. NIST-Cornell team builds worlds first nanofluidic device with complex 3-D surfaces
9. DOE awards UGA $3.1 million to support complex carbohydrate study nationwide
10. Artificial cells, simple model for complex structure
11. SUNY Downstate researchers find that memory storage molecule preserves complex memories
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/9/2017)... -- The biomass boiler market report by Transparency Market ... globally in terms of revenue (US$ Mn) based on ... biomass boilers has been segmented on the basis of ... market based on feedstock type, has been segmented into ... crops, urban residues, and others. On the basis of ...
(Date:2/8/2017)... AWRE ), a leading supplier of biometrics software ... year ended December 31, 2016. Revenue for ... $6.9 million in the same quarter last year. Operating income ... to $2.6 million in the fourth quarter of 2015. Net ... or $0.02 per diluted share, which compares to $1.8 million, ...
(Date:2/8/2017)... 2017 The biometrics market has reached ... of organizations, desires to better authenticate or identify ... and challenge questions), biometrics is quickly working its ... market is driven by use cases, though there ... enterprise uses cases, with consumer-facing use cases encompassing ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... DIEGO , Feb. 22, 2017  PrimeVax Immuno-Oncology, ... will be presenting at the Annual Biocom Global Life ... March 2, at 11:15 AM, at the Torrey Pines ... thankful to the organizers at Biocom who have chosen ... international symposium of biotechnology companies, investors, and clinical researchers," ...
(Date:2/22/2017)... ... February 22, 2017 , ... ProMIS Neurosciences (“ProMIS” ... for neurodegenerative diseases, today announced it has issued a scientific white paper entitled ... of a series of commentaries from ProMIS’s scientific team offering insight into the ...
(Date:2/22/2017)... , Feb 22, 2017 Dublin ... the "Global Biological Crop Protection (Bio-Pesticide) Market-By Type, By Application, ... report to their offering. ... Global Biological Crop Protection Market is forecasted to ... The strong growth in biopesticide or biological crop protection market is ...
(Date:2/22/2017)... , ... February 22, 2017 , ... ... Dr. Daniel Spyker, PhD, MD former Acting Deputy Director in the FDA CDRH ... Drug Evaluation Staff has joined the company as an Expert Consultant. , In ...
Breaking Biology Technology: