Eurasian jays (Garrulus glandarius) conceal caches from onlookers

Legg, Edward W.; Clayton, Nicola S.

doi:10.1007/s10071-014-0743-2

Cited by 38 publications

(84 citation statements)

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“…However, in the case of Eurasian jays ( Garrulus glandarius ) and Western scrub-jays ( Aphelocoma californica ) this particular by-product hypothesis can be ruled out. Eurasian jays preferentially cache behind opaque barriers only when a conspecific is present (Legg and Clayton 2014 ) and Western scrub-jays spend similar amounts of time behind opaque and transparent barriers but preferentially cache behind the former (Dally et al 2005 ).…”

Section: Introductionmentioning

confidence: 99%

Caching at a distance: a cache protection strategy in Eurasian jays

2016

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A fundamental question about the complexity of corvid social cognition is whether behaviours exhibited when caching in front of potential pilferers represent specific attempts to prevent cache loss (cache protection hypothesis) or whether they are by-products of other behaviours (by-product hypothesis). Here, we demonstrate that Eurasian jays preferentially cache at a distance when observed by conspecifics. This preference for a ‘far’ location could be either a by-product of a general preference for caching at that specific location regardless of the risk of cache loss or a by-product of a general preference to be far away from conspecifics due to low intra-species tolerance. Critically, we found that neither by-product account explains the jays’ behaviour: the preference for the ‘far’ location was not shown when caching in private or when eating in front of a conspecific. In line with the cache protection hypothesis we found that jays preferred the distant location only when caching in front of a conspecific. Thus, it seems likely that for Eurasian jays, caching at a distance from an observer is a specific cache protection strategy.Electronic supplementary materialThe online version of this article (doi:10.1007/s10071-016-0972-7) contains supplementary material, which is available to authorized users.

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Section: Introductionmentioning

confidence: 99%

Caching at a distance: a cache protection strategy in Eurasian jays

2016

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“…Bernd Heinrich is famous for his behavioural studies on Ravens ( C . corax ) in the wild in Maine/the USA ( 32 ), while Nicola S. Clayton studied learning and cognitive behaviour on different corvids in captivity ( 33 ).…”

Section: Resultsmentioning

confidence: 99%

The Corvids Literature Database—500 years of ornithological research from a crow’s perspective

Droege

Töpfer

2016

Database

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Corvids (Corvidae) play a major role in ornithological research. Because of their worldwide distribution, diversity and adaptiveness, they have been studied extensively. The aim of the Corvids Literature Database (CLD, http://www.corvids.de/cld) is to record all publications (citation format) on all extant and extinct Crows, Ravens, Jays and Magpies worldwide and tag them with specific keywords making them available for researchers worldwide. The self-maintained project started in 2006 and today comprises 8000 articles, spanning almost 500 years. The CLD covers publications from 164 countries, written in 36 languages and published by 8026 authors in 1503 journals (plus books, theses and other publications). Forty-nine percent of all records are available online as full-text documents or deposited in the physical CLD archive. The CLD contains 442 original corvid descriptions. Here, we present a metadata assessment of articles recorded in the CLD including a gap analysis and prospects for future research.Database URL: http://www.corvids.de/cld

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“…In deciding which cache protection tactics to use, the birds take into account the dominance status of the potential pilferer in relation to their own dominance status, using different strategies if they are dominant to the onlooker than if they are subordinate (reviewed by Clayton et al, 2007). Similar tactics have been found in several other species of corvids, in both the laboratory and the field, including ravens (e.g., Bugnyar, 2011), Clark's nutcrackers (Clary and Kelly, 2011), Florida scrub-jays (Kulahci and Bowman, 2011), and Eurasian jays (e.g., Legg and Clayton, 2014) and also in some parids, namely mountain chickadees (Pravosudov, 2008).…”

Section: Cache Protection Strategiesmentioning

confidence: 91%

Avian Models for Human Cognitive Neuroscience: A Proposal

Clayton

Emery

2015

Neuron

137

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Research on avian cognitive neuroscience over the past two decades has revealed the avian brain to be a better model for understanding human cognition than previously thought, despite differences in the neuroarchitecture of avian and mammalian brains. The brain, behavior, and cognition of songbirds have provided an excellent model of human cognition in one domain, namely learning human language and the production of speech. There are other important behavioral candidates of avian cognition, however, notably the capacity of corvids to remember the past and plan for the future, as well as their ability to think about another's perspective, and physical reasoning. We review this work and assess the evidence that the corvid brain can support such a cognitive architecture. We propose potential applications of these behavioral paradigms for cognitive neuroscience, including recent work on single-cell recordings and neuroimaging in corvids. Finally, we discuss their impact on understanding human developmental cognition.

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Eurasian jays (Garrulus glandarius) conceal caches from onlookers

Cited by 38 publications

References 10 publications

Caching at a distance: a cache protection strategy in Eurasian jays

Caching at a distance: a cache protection strategy in Eurasian jays

The Corvids Literature Database—500 years of ornithological research from a crow’s perspective

Avian Models for Human Cognitive Neuroscience: A Proposal

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