Ravens adjust their antipredatory responses to con- and hetero-specific alarms to the perceived threat
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F18%3A43897204" target="_blank" >RIV/60076658:12310/18:43897204 - isvavai.cz</a>
Result on the web
<a href="https://kopernio.com/viewer?doi=10.1111/eth.12764&route=6" target="_blank" >https://kopernio.com/viewer?doi=10.1111/eth.12764&route=6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1111/eth.12764" target="_blank" >10.1111/eth.12764</a>
Alternative languages
Result language
angličtina
Original language name
Ravens adjust their antipredatory responses to con- and hetero-specific alarms to the perceived threat
Original language description
Heterospecific alarm calls are typically found in situations where multiple species have a common predator. In birds, they are particularly common in mixed mixed-species flocks. In species with highly developed social and cognitive abilities like corvids, there is the potential for differential responses to heterospecific vs. conspecific calls according to the riskiness of the habitat. We tested the responses of free-ranging ravens (Corvus corax) to conspecific alarm calls and compared them to heterospecific alarm calls of jackdaws (Corvus monedula). We observed the proportion of ravens leaving the feeding site after the con- or hetero-specific playback was presented in a situation of low threat (wild boarSus scrofa enclosure) and high threat of predation (wolfCanis lupus enclosure). We show that ravens responded to conspecific calls more intensively at the wolves than at the wild boar, but the response to conspecific calls was in both enclosures stronger than to the control (great titParus major song). The response to the heterospecific alarm was also stronger in the wolves' enclosure, but it did not differ from control in the wild boar enclosure. These findings suggest that ravens are aware of the meaning of the jackdaw alarm calls, but they respond to it only in a situation of high predatory threat (wolves are present). In the wild boar enclosure, the ravens probably consider jackdaws warning against some other predator, very probably harmless to ravens. This interpretation requires further testing, as both enclosures differ also in respect to other parameters like food quality and shelter availability.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10614 - Behavioral sciences biology
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Ethology
ISSN
0179-1613
e-ISSN
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Volume of the periodical
124
Issue of the periodical within the volume
8
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
609-616
UT code for WoS article
000437734700009
EID of the result in the Scopus database
2-s2.0-85049597832