Early social environment affects attention to social cues in juvenile common ravens, Corvus corax

Autor(en)
Mario Gallego-Abenza, Palmyre Boucherie, Thomas Bugnyar
Abstrakt

Social competence, i.e. defined as the ability to adjust the expression of social behaviour to the available social information, is known to be influenced by early-life conditions. Brood size might be one of the factors determining such early conditions, particularly in species with extended parental care. We here tested in ravens whether growing up in families of different sizes affects the chicks’ responsiveness to social information. We experimentally manipulated the brood size of 13 captive raven families, creating either small or large families. Simulating dispersal, juveniles were separated from their parents and temporarily housed in one of two captive non-breeder groups. After five weeks of socialization, each raven was individually tested in a playback setting with food- associated calls from three social categories: sibling, familiar unrelated raven they were housed with, and unfamiliar unrelated raven from the other non-breeder aviary. We found that individuals reared in small families were more attentive than birds from large families, in particular towards the familiar unrelated peer. These results indicate that variation in family size during upbringing can affect how juvenile ravens value social information. Whether the observed attention patterns translate into behavioural preferences under daily life conditions remains to be tested in future studies.

Organisation(en)
Department für Verhaltens- und Kognitionsbiologie, Core Facility KLF für Verhaltens- und Kognitionsbiologie
Journal
Royal Society Open Science
ISSN
2054-5703
Publikationsdatum
06-2022
Peer-reviewed
Ja
ÖFOS 2012
106051 Verhaltensbiologie
Link zum Portal
https://ucris.univie.ac.at/portal/de/publications/early-social-environment-affects-attention-to-social-cues-in-juvenile-common-ravens-corvus-corax(e23858cb-95b9-48a1-846c-3708c2e224cb).html