A case report of an Eurasian jay (Garrulus glandarius) attacking an incubating adult and depredating the eggs of the Japanese tit (Parus minor) [PDF]
Ecology and Evolution, 2023 In May 2021, we opportunistically observed one Eurasian jay (Garrulus glandarius) attacking an adult incubating Japanese tit (Parus minor) and depredating nine tit eggs at a nest box where a woodpecker had greatly enlarged the entrance.
Dake Yin +2 more
exaly +5 more sources
Eurasian jays do not copy the choices of conspecifics, but they do show evidence of stimulus enhancement [PDF]
PeerJ, 2016 Corvids (birds in the crow family) are hypothesised to have a general cognitive tool-kit because they show a wide range of transferrable skills across social, physical and temporal tasks, despite differences in socioecology.
Rachael Miller +3 more
doaj +16 more sources
What if Eurasian jay Garrulus glandarius would larder acorns instead of scatter them? [PDF]
IForest, 2018 Jays usually store acorns at separate sites, but in some cases a part of jay’s caches consists of more than one acorn. Storing acorns separately (scatter hoarding) or in clusters (larder hoarding) seems to be an important factor for further survival of ...
Kurek P +3 more
exaly +4 more sources
Desire-state attribution: Benefits of a novel paradigm using the food-sharing behavior of Eurasian jays (Garrulus glandarius) [PDF]
Communicative & Integrative Biology, 2016 In recent years, we have investigated the possibility that Eurasian jay food sharing might rely on desire-state attribution. The female's desire for a particular type of food can be decreased by sating her on it (specific satiety) and the food sharing ...
Ljerka Ostojić +4 more
doaj +4 more sources
How Flexible is Tool Use in Eurasian Jays (Garrulus glandarius)? [PDF]
Animal Behavior and Cognition, 2020 Eurasian jays (Garrulus glandarius) do not habitually use tools, yet they can be trained to solve object-dropping tasks, i.e., to insert a tool into an apparatus to release a food reward.
Piero Amodio +4 more
doaj +3 more sources
eLife, 2021 Eurasian jays have been reported to protect their caches by responding to cues about either the visual perspective or current desire of an observing conspecific, similarly to other corvids.
Piero Amodio +4 more
doaj +2 more sources
Spatial Overlap and Habitat Selection of Corvid Species in European Cities [PDF]
Animals, 2023 Understanding habitat and spatial overlap in sympatric species of urban areas would aid in predicting species and community modifications in response to global change.
Farah Abou Zeid +18 more
doaj +2 more sources
Modifications to the Aesop's Fable paradigm change New Caledonian crow performances. [PDF]
PLoS ONE, 2014 While humans are able to understand much about causality, it is unclear to what extent non-human animals can do the same. The Aesop's Fable paradigm requires an animal to drop stones into a water-filled tube to bring a floating food reward within reach ...
Corina J Logan +4 more
doaj +8 more sources
Functional morphology and integration of corvid skulls – a 3D geometric morphometric approach [PDF]
Frontiers in Zoology, 2009 Background Sympatric corvid species have evolved differences in nesting, habitat choice, diet and foraging. Differences in the frequency with which corvid species use their repertoire of feeding techniques is expected to covary with bill-shape and with ...
Gunz Philipp +4 more
doaj +6 more sources
Surveillance of West Nile virus infections in humans and animals in Europe, monthly report – data submitted up to 3 December 2025 [PDF]
EFSA JournalEpidemiological summary In 2025, and as of 3 December, 14 countries in Europe reported 1112 locally acquired1 human cases of WNV infection. The earliest and latest date of onset were on 19 May 2025 and 27 October 2025, respectively.
European Centre for Disease Prevention and Control (ECDC) +1 more
doaj +2 more sources