Size sometimes matters: recognition of known predators with artificially altered body size by untrained birds

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F24%3A10486198" target="_blank" >RIV/00216208:11310/24:10486198 - isvavai.cz</a>

Alternative codes found

RIV/60076658:12310/24:43907974

Result on the web

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=~W.pVopENB" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=~W.pVopENB</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.anbehav.2023.12.017" target="_blank" >10.1016/j.anbehav.2023.12.017</a>

Result language

angličtina

Original language name

Size sometimes matters: recognition of known predators with artificially altered body size by untrained birds

Original language description

An integral characteristic of all predators is their size, which affects, among other things, their food preferences, and the ability of their prey to fight them off. Several studies have already found, unsurprisingly, that birds discriminate between and respond differently to predators of different sizes. The redbacked shrike, Lanius collurio, aggressively attacks the Eurasian jay, Garrulus glandarius, a common nest predator, whereas it remains passive towards the carrion crow, Corvus corone, which also commonly plunders passerine nests. A possible explanation may reside in the larger body size of crows. In our experiments, we exposed red-backed shrikes to downsized crow dummies and enlarged jay dummies. The shrikes responded to the largest jays with less aggression, suggesting that aggression towards the largest jays would increase risk of injury to parent shrikes and/or not increase the likelihood of offspring survival. In contrast, aggression increased only slightly towards the crows with reduced size. Thus, there was no general effect of body size on the attack rate of shrikes to the presented dummies. In the case of the crow, an alternative antipredator strategy, guarding and not attacking the predator, might affect the behaviour of some shrike parents. These results suggest that body size is one of the key parameters in the recognition of predators by red-backed shrikes, but it is evaluated differently in nest defence against two distinct predator species.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10613 - Zoology

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2024

Confidentiality

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

Name of the periodical

Animal Behaviour

ISSN

0003-3472

e-ISSN

1095-8282

Volume of the periodical

209

Issue of the periodical within the volume

March

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

1-7

UT code for WoS article

001161334300001

EID of the result in the Scopus database

2-s2.0-85182010846