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Why preen others? Predictors of allopreening in parrots and corvids and comparisons to grooming in great apes

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Date
13/01/2020
Author
Picard, Alejandra Morales
Mundry, Roger
Auersperg, Alice M.
Boeving, Emily R.
Boucherie, Palmyre H.
Bugnyar, Thomas
Dufour, Valérie
Emery, Nathan J.
Federspiel, Ira G.
Gajdon, Gyula K.
Guéry, Jean-Pascal
Hegedič, Matjaž
Horn, Lisa
Kavanagh, Eithne
Lambert, Megan L.
Massen, Jorg J. M.
Rodrigues, Michelle A.
Schiestl, Martina
Schwing, Raoul
Szabo, Birgit
Taylor, Alex H.
van Horik, Jayden O.
von Bayern, Auguste M. P.
Seed, Amanda
Slocombe, Katie E.
Keywords
Affiliative relationships
Allogrooming
Allopreening
Corvids
Parrots
Primates
Social bonds
BF Psychology
NDAS
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Abstract
Allogrooming in primates serves not only a hygienic function, but also plays a crucial role in maintaining strong affiliative bonds between group members, which in turn, underpin the emergence of cooperative behavior. In contrast, although allopreening occurs in many avian species, we know little about its social functions. Our study addresses this issue by investigating allopreening in a broad comparative data set including six corvid and nine parrot species. We assessed whether rates of allopreening initiations, proportion of time spent allopreening, and the number of grooming partners in captive group‐housed birds were comparable to patterns observed in captive chimpanzees and bonobos. While parrots and corvids were found to have similar rates of social grooming to bonobos and chimpanzees, Pan species dedicated significantly more time to social grooming. Animals in larger groups had more grooming partners, but when controlling for the number of potential partners, birds tended to have fewer grooming interaction partners than Pan species. We then investigated whether allopreening in parrots and corvids was predicted by behavioral markers of affiliative social bonds (close physical proximity, active feeding, and low levels of agonistic behavior). Results revealed that providing allopreening to a partner was significantly predicted by often being in close proximity, but not engagement in active feeding or agonistic behavior. We examined the region allopreened in a subset of species and found that preening a partner's head was predicted by both close physical proximity and active feeding, while body allopreening was only predicted by close physical proximity. Head preening may confer more hygienic benefits to recipients, and thus, may be more selectively provided to valued partners. Results support the hypothesis that allopreening in corvids and parrots helps maintain social bonds with an individual's most important social partners, showing some similarities to allogrooming in primates.
Citation
Picard , A M , Mundry , R , Auersperg , A M , Boeving , E R , Boucherie , P H , Bugnyar , T , Dufour , V , Emery , N J , Federspiel , I G , Gajdon , G K , Guéry , J-P , Hegedič , M , Horn , L , Kavanagh , E , Lambert , M L , Massen , J J M , Rodrigues , M A , Schiestl , M , Schwing , R , Szabo , B , Taylor , A H , van Horik , J O , von Bayern , A M P , Seed , A & Slocombe , K E 2020 , ' Why preen others? Predictors of allopreening in parrots and corvids and comparisons to grooming in great apes ' , Ethology , vol. 126 , no. 2 , pp. 207-228 . https://doi.org/10.1111/eth.12999
Publication
Ethology
Status
Peer reviewed
DOI
https://doi.org/10.1111/eth.12999
ISSN
0179-1613
Type
Journal article
Rights
Copyright © 2019 Blackwell Verlag GmbH. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1111/eth.12999
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/21153

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