Evidence map›Paper›PMID 28336913›Full record

ArticleScientific reports2017

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

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

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
5.3field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 72 citations in OpenAlex.

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  13. No Evidence for Contagious Yawning in Juvenile Ravens (Animals : an open access journal from MDPI · 2022
    Article
  14. Dominance in a socially dynamic setting: hierarchical structure and conflict dynamics in ravens' foraging groups.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
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  18. Review
  19. Effect of rearing style on the development of social behaviour in young ravens (Ethology : formerly Zeitschrift fur Tierpsychologie · 2020
    Article
  20. Decision time modulates social foraging success in wild common ravens,Ethology : formerly Zeitschrift fur Tierpsychologie · 2020
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 4 institutions in 4 countries.

Matthias-Claudio LorettoDepartment of Cognitive Biology, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria. mail@m-loretto.com.ORCID 0000-0002-1940-3470
Richard SchusterDepartment of Forest and Conservation Sciences, University of British Columbia, 3041 - 2424 Main Mall, Vancouver, B.C., V6T 1Z4, Canada.ORCID 0000-0003-3191-7869
Christian IttyOffice National de la Chasse et de Faune sauvage, Délégation Régionale Occitanie, Actisud Bâtiment 12, 18 rue Jean Perrin, F-31100, Toulouse, France.
Pascal MarchandOffice National de la Chasse et de Faune sauvage, Délégation Régionale Occitanie, Actisud Bâtiment 12, 18 rue Jean Perrin, F-31100, Toulouse, France.
Fulvio GeneroRiserva naturale regionale del Lago di Cornino, I-33030 Forgaria nel Friuli, Udine, Italy.
Thomas BugnyarDepartment of Cognitive Biology, University of Vienna, Althanstrasse 14, A-1090, Vienna, Austria.
Office National de la Chasse et de la Faune Sauvage · FRUniversity of Vienna · ATTrento RISE (Italy) · ITUniversity of British Columbia · CA

Funding

Austrian Science Fund FWF P 29705Austrian Science Fund FWF Y 366
6 · The paper itself

Abstract

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.

Indexed as

Behavior, AnimalCrowsSocial BehaviorAnimalsEuropeFeeding BehaviorFemaleMale

Identifiers

PMID28336913
PMCPMC5428508
OpenAlexW2596822119

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.