{"id":{"repo_id":"cambridge","oai_identifier":"oai:www.repository.cam.ac.uk:1810/241706"},"canonical_url":"https://search.dev.ndltd.org/etd/cambridge/oai:www.repository.cam.ac.uk:1810/241706","repository":{"repo_id":"cambridge","name":"Cambridge University","base_url":"https://api.repository.cam.ac.uk/server/oai/request"},"display":{"title":"The sociality, ontogeny, and function of corvid post-conflict affiliation","abstract":"Humans and non-humans alike seek support after conflicts by making up with their former opponent (former opponent affiliation) or by affiliating with a bystander (thirdparty affiliation). Post-conflict behaviour has been studied in many mammals but only in two bird species: rooks and ravens. Consequently, the prevalence and function of avian post-conflict affiliation is unknown. My objectives were to expand the study of post-conflict affiliation to more bird species and examine two potential functions of this behaviour. I hypothesised that differences in sociality would influence corvid postconflict affiliation, and that this behaviour would change as individuals developed from juveniles to adults. I predicted that social rooks (Corvus frugilegus) and jackdaws (C. monedula), but not the less social Eurasian jays (Garrulus glandarius), should have post-conflict affiliation because this behaviour should be dependent on the presence of high quality social bonds. Affiliation should only occur with their mate because they are monogamous; the pair-bond being by far the highest quality relationship in the group. My results showed that the social species have third-party affiliation with their mate, while the less social jays have third-party affiliation with anyone. This behaviour became more frequent and lasted longer as jackdaws went from the pair formation stage to sexual maturity. Exploring the function of third-party affiliation, I found that it decreased the likelihood of receiving non-conflict aggression, thus buffering postconflict aggression for jackdaw and rook aggressors, as well as for rook victims. Hypotheses about post-conflict affiliation primarily concern former opponent affiliation and primates. I reviewed post-conflict affiliation across taxa and proposed a broad hypothesis that includes all forms of post-conflict affiliation: former opponent, thirdparty, quadratic, inter-group, and inter-species.","abstract_html":"Humans and non-humans alike seek support after conflicts by making up with their former opponent (former opponent affiliation) or by affiliating with a bystander (thirdparty affiliation). Post-conflict behaviour has been studied in many mammals but only in two bird species: rooks and ravens. Consequently, the prevalence and function of avian post-conflict affiliation is unknown. My objectives were to expand the study of post-conflict affiliation to more bird species and examine two potential functions of this behaviour. I hypothesised that differences in sociality would influence corvid postconflict affiliation, and that this behaviour would change as individuals developed from juveniles to adults. I predicted that social rooks (Corvus frugilegus) and jackdaws (C. monedula), but not the less social Eurasian jays (Garrulus glandarius), should have post-conflict affiliation because this behaviour should be dependent on the presence of high quality social bonds. Affiliation should only occur with their mate because they are monogamous; the pair-bond being by far the highest quality relationship in the group. My results showed that the social species have third-party affiliation with their mate, while the less social jays have third-party affiliation with anyone. This behaviour became more frequent and lasted longer as jackdaws went from the pair formation stage to sexual maturity. Exploring the function of third-party affiliation, I found that it decreased the likelihood of receiving non-conflict aggression, thus buffering postconflict aggression for jackdaw and rook aggressors, as well as for rook victims. Hypotheses about post-conflict affiliation primarily concern former opponent affiliation and primates. I reviewed post-conflict affiliation across taxa and proposed a broad hypothesis that includes all forms of post-conflict affiliation: former opponent, thirdparty, quadratic, inter-group, and inter-species.","abstract_has_math":false,"creators":["Logan, Corina"],"institution":"University of Cambridge","degree_name":"Doctor of Philosophy (PhD)","degree_level":"Doctoral","degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-02-07","date_published":"2012-02-07","updated_at":"2026-07-22T22:24:13Z","subjects":[],"languages":["eng"],"rights":[],"rights_urls":["https://apollo8-f-pro.lib.cam.ac.uk/bitstreams/0c6aeb7f-1331-477e-9d44-fc1410b8d165/download","https://www.rioxx.net/licenses/all-rights-reserved/"],"identifier_entries":[]},"links":{"outbound_url":"https://doi.org/10.17863/CAM.129","outbound_label":"DOI","outbound_source":"dc:identifier.doi"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Logan, Corina"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.issued","label":"Date","values":["2012-02-07"]},{"key":"dc:publisher.institution","label":"Dc Publisher Institution","values":["University of Cambridge"]},{"key":"dc:relation.isreferencedby.uri","label":"Dc Relation Isreferencedby URI","values":["http://www.dspace.cam.ac.uk/handle/1810/241706","https://www.repository.cam.ac.uk/handle/1810/241706"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"dc:type.qualificationlevel","label":"Dc Type Qualificationlevel","values":["Doctoral"]},{"key":"dc:type.qualificationname","label":"Dc Type Qualificationname","values":["Doctor of Philosophy (PhD)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["https://apollo8-f-pro.lib.cam.ac.uk/bitstreams/0c6aeb7f-1331-477e-9d44-fc1410b8d165/download","https://www.rioxx.net/licenses/all-rights-reserved/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.doi","label":"DOI","values":["10.17863/CAM.129"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://apollo8-f-pro.lib.cam.ac.uk/bitstreams/6cdf98ea-b90d-4f8e-88f6-3989818322d9/download"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Humans and non-humans alike seek support after conflicts by making up with their former opponent (former opponent affiliation) or by affiliating with a bystander (thirdparty affiliation). 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My results showed that the social species have third-party affiliation with their mate, while the less social jays have third-party affiliation with anyone. This behaviour became more frequent and lasted longer as jackdaws went from the pair formation stage to sexual maturity. Exploring the function of third-party affiliation, I found that it decreased the likelihood of receiving non-conflict aggression, thus buffering postconflict aggression for jackdaw and rook aggressors, as well as for rook victims. Hypotheses about post-conflict affiliation primarily concern former opponent affiliation and primates. 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My objectives were to expand the study of post-conflict affiliation to more bird species and examine two potential functions of this behaviour. I hypothesised that differences in sociality would influence corvid postconflict affiliation, and that this behaviour would change as individuals developed from juveniles to adults. I predicted that social rooks (Corvus frugilegus) and jackdaws (C. monedula), but not the less social Eurasian jays (Garrulus glandarius), should have post-conflict affiliation because this behaviour should be dependent on the presence of high quality social bonds. Affiliation should only occur with their mate because they are monogamous; the pair-bond being by far the highest quality relationship in the group. My results showed that the social species have third-party affiliation with their mate, while the less social jays have third-party affiliation with anyone. This behaviour became more frequent and lasted longer as jackdaws went from the pair formation stage to sexual maturity. Exploring the function of third-party affiliation, I found that it decreased the likelihood of receiving non-conflict aggression, thus buffering postconflict aggression for jackdaw and rook aggressors, as well as for rook victims. Hypotheses about post-conflict affiliation primarily concern former opponent affiliation and primates. 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