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 +7 more
doaj +2 more sources
High prevalence of haemosporidian parasites in Eurasian jays. [PDF]
Parasitol Res, 2023 Abstract Avian haemosporidians are vector-borne parasites, infecting a great variety of birds. The order Passeriformes has the highest average infection probability; nevertheless, some common species of Passeriformes have been rather poorly studied. We investigated haemosporidians in one such species, the Eurasian
Schumm YR +3 more
europepmc +6 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 +7 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
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
Social influences on delayed gratification in New Caledonian crows and Eurasian jays. [PDF]
PLoS One, 2023 AbstractSelf-control underlies goal-directed behaviour in humans and other animals. Delayed gratification - a measure of self-control - requires the ability to tolerate a delay and/or invest more effort to obtain a reward of higher value over one of lower value, such as food or mates.
Miller R +6 more
europepmc +8 more sources
Passive environmental and group-level processes drive gut microbiome composition in a wild corvid [PDF]
Animal MicrobiomeBackground The gut microbiome is known from laboratory studies to be essential to host function and sociality, yet comparatively little is known about this association in wild animals.
Eleonore Lebeuf-Taylor +4 more
doaj +2 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 +5 more sources
What if Eurasian jay Garrulus glandarius would larder acorns instead of scatter them? [PDF]
iForest - Biogeosciences and Forestry, 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
doaj +2 more sources
Eurasian jays (Garrulus glandarius) show episodic-like memory through the incidental encoding of information. [PDF]
PLoS OneEpisodic memory describes the conscious reimagining of our memories and is often considered to be a uniquely human ability. As these phenomenological components are embedded within its definition, major issues arise when investigating the presence of episodic memory in non-human animals.
Davies JR +2 more
europepmc +5 more sources