Ravens adjust their antipredatory responses to con- and hetero-specific alarms to the perceived threat

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Ravens adjust their antipredatory responses to con- and hetero-specific alarms to the perceived threat

Popis výsledku v původním jazyce

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&apos; 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.

Název v anglickém jazyce

Ravens adjust their antipredatory responses to con- and hetero-specific alarms to the perceived threat

Popis výsledku anglicky

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&apos; 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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10614 - Behavioral sciences biology

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Ethology

ISSN

0179-1613

e-ISSN

—

Svazek periodika

124

Číslo periodika v rámci svazku

8

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

8

Strana od-do

609-616

Kód UT WoS článku

000437734700009

EID výsledku v databázi Scopus

2-s2.0-85049597832