Fission-fusion dynamics over large distances in raven non-breeders

Loretto, Matthias-Claudio; Schuster, Richard; Itty, Christian; Marchand, Pascal; Genero, Fulvio; Bugnyar, Thomas

Fission-fusion dynamics over large distances in raven non-breeders

Dateien

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Datum

2017

Autor:innen

Loretto, Matthias-Claudio

Schuster, Richard

Itty, Christian

Marchand, Pascal

Genero, Fulvio

Bugnyar, Thomas

Open Access-Veröffentlichung

Open Access Gold

Sammlungen

Biologie

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Scientific Reports. Springer Nature. 2017, 7(1), 380. eISSN 2045-2322. Available under: doi: 10.1038/s41598-017-00404-4

Zusammenfassung

The influence of fission-fusion dynamics, i.e., temporal variation in group size and composition, on social complexity has been studied in large-brained mammals that rely on social bonds. Little is known about birds, even though some species like ravens have recently received attention for their socio-cognitive skills and use of social bonds. While raven breeders defend territories year-round, non-breeders roam through large areas and form groups at food sources or night roosts. We here examined the fission-fusion patterns of non-breeding ravens over years, investigating whether birds meet repeatedly either at the same or at different locations. We combined four large datasets: presence-absence observations from two study sites (Austria, Italy) and GPS-tracking of ravens across two study areas (Austria, France). As expected, we found a highly dynamic system in which individuals with long phases of temporary settlement had a high probability of meeting others. Although GPS-tagged ravens spread out over thousands of square kilometres, we found repeated associations between almost half of the possible combinations at different locations. Such a system makes repeated interactions between individuals at different sites possible and likely. High fission-fusion dynamics may thus not hinder but shape the social complexity of ravens and, possibly, other long-term bonded birds.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Zitieren

ISO 690

LORETTO, Matthias-Claudio, Richard SCHUSTER, Christian ITTY, Pascal MARCHAND, Fulvio GENERO, Thomas BUGNYAR, 2017. Fission-fusion dynamics over large distances in raven non-breeders. In: Scientific Reports. Springer Nature. 2017, 7(1), 380. eISSN 2045-2322. Available under: doi: 10.1038/s41598-017-00404-4

BibTex

@article{Loretto2017Fissi-49974,
  year={2017},
  doi={10.1038/s41598-017-00404-4},
  title={Fission-fusion dynamics over large distances in raven non-breeders},
  number={1},
  volume={7},
  journal={Scientific Reports},
  author={Loretto, Matthias-Claudio and Schuster, Richard and Itty, Christian and Marchand, Pascal and Genero, Fulvio and Bugnyar, Thomas},
  note={Article Number: 380}
}

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