Ravens adjust their antipredatory responses to con‐ and hetero‐specific alarms to the perceived threat
Abstract 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 differen...
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crwiley:10.1111/eth.12764 2024-06-02T08:05:04+00:00 Ravens adjust their antipredatory responses to con‐ and hetero‐specific alarms to the perceived threat Nácarová, Jana Veselý, Petr Bugnyar, Thomas Tregenza, T. Austrian Science Fund Jihočeská Univerzita v Českých Budějovicích 2018 http://dx.doi.org/10.1111/eth.12764 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feth.12764 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eth.12764 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Ethology volume 124, issue 8, page 609-616 ISSN 0179-1613 1439-0310 journal-article 2018 crwiley https://doi.org/10.1111/eth.12764 2024-05-03T11:23:39Z Abstract 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 boar— Sus scrofa enclosure) and high threat of predation (wolf— Canis 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 tit— Parus 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. Article in Journal/Newspaper Canis lupus Wiley Online Library Parus ENVELOPE(3.950,3.950,-71.983,-71.983) The Ravens ENVELOPE(-55.681,-55.681,53.217,53.217) Ethology 124 8 609 616 |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract 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 boar— Sus scrofa enclosure) and high threat of predation (wolf— Canis 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 tit— Parus 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. |
author2 |
Tregenza, T. Austrian Science Fund Jihočeská Univerzita v Českých Budějovicích |
format |
Article in Journal/Newspaper |
author |
Nácarová, Jana Veselý, Petr Bugnyar, Thomas |
spellingShingle |
Nácarová, Jana Veselý, Petr Bugnyar, Thomas Ravens adjust their antipredatory responses to con‐ and hetero‐specific alarms to the perceived threat |
author_facet |
Nácarová, Jana Veselý, Petr Bugnyar, Thomas |
author_sort |
Nácarová, Jana |
title |
Ravens adjust their antipredatory responses to con‐ and hetero‐specific alarms to the perceived threat |
title_short |
Ravens adjust their antipredatory responses to con‐ and hetero‐specific alarms to the perceived threat |
title_full |
Ravens adjust their antipredatory responses to con‐ and hetero‐specific alarms to the perceived threat |
title_fullStr |
Ravens adjust their antipredatory responses to con‐ and hetero‐specific alarms to the perceived threat |
title_full_unstemmed |
Ravens adjust their antipredatory responses to con‐ and hetero‐specific alarms to the perceived threat |
title_sort |
ravens adjust their antipredatory responses to con‐ and hetero‐specific alarms to the perceived threat |
publisher |
Wiley |
publishDate |
2018 |
url |
http://dx.doi.org/10.1111/eth.12764 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Feth.12764 https://onlinelibrary.wiley.com/doi/pdf/10.1111/eth.12764 |
long_lat |
ENVELOPE(3.950,3.950,-71.983,-71.983) ENVELOPE(-55.681,-55.681,53.217,53.217) |
geographic |
Parus The Ravens |
geographic_facet |
Parus The Ravens |
genre |
Canis lupus |
genre_facet |
Canis lupus |
op_source |
Ethology volume 124, issue 8, page 609-616 ISSN 0179-1613 1439-0310 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/eth.12764 |
container_title |
Ethology |
container_volume |
124 |
container_issue |
8 |
container_start_page |
609 |
op_container_end_page |
616 |
_version_ |
1800749815678631936 |