Bonding beyond the pair in a monogamous bird: Impact on social structure in adult rooks (Corvus frugilegus)

Boucherie, Palmyre H, Mariette, Mylene, Bret, Celine and Dufour, Valerie 2016, Bonding beyond the pair in a monogamous bird: Impact on social structure in adult rooks (Corvus frugilegus), Behaviour: an international journal of behaviourial biology, vol. 153, no. 8, pp. 897-925, doi: 10.1163/1568539X-00003372.

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Title Bonding beyond the pair in a monogamous bird: Impact on social structure in adult rooks (Corvus frugilegus)
Author(s) Boucherie, Palmyre H
Mariette, MyleneORCID iD for Mariette, Mylene
Bret, Celine
Dufour, Valerie
Journal name Behaviour: an international journal of behaviourial biology
Volume number 153
Issue number 8
Start page 897
End page 925
Total pages 29
Publisher Brill Academic Publishers
Place of publication Leiden, The Netherlands
Publication date 2016-01-01
ISSN 1568-539X
Keyword(s) corvids
pair bonding
extra-pair relationship
same-sex relationship
social structure
Summary The formation of social bonds outside the mated pair is not frequently reported in monogamous birds, although it may be expected in some species like rooks, living in groups all year round. Here we explore the social structure of captive adult rooks over three breeding seasons. We recorded proximities and affiliations (i.e., allofeeding, allopreening, contact-sit) to classify relationships according to their strength. Three categories of relationships emerged: primary (i.e., pairs), secondary and weak relationships. Affiliations and sexual behaviours were not restricted to pairs, and secondary relationships were clearly recognizable. Mixed-sex secondary relationships were qualitatively equivalent to pairs (i.e., same behaviours in the same proportions), although they were quantitatively less intense. Same sex pairs occurred, and were qualitatively equivalent to mixedsex pairs. Overall we found that rooks social structure is more than just an aggregation of pairs, which highlights the importance of considering extra-pair relationships in socially monogamous birds.
Language eng
DOI 10.1163/1568539X-00003372
Field of Research 060801 Animal Behaviour
060201 Behavioural Ecology
060399 Evolutionary Biology not elsewhere classified
Socio Economic Objective 970106 Expanding Knowledge in the Biological Sciences
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, Brill Academic Publishers
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