Results 11 to 20 of about 666 (148)

Emergence and Genetic Characteristics of H5N1, H5N6, and H5N3 Clade 2.3.4.4b High Pathogenicity Avian Influenza Viruses in South Korea During the 2023-2024 and 2024-2025 Winter Seasons. [PDF]

Transbound Emerg Dis
Since 2020, clade 2.3.4.4b H5Nx high pathogenicity avian influenza viruses (HPAIVs) have consistently spread across continents, causing outbreaks worldwide. During the 2023–2024 (23/24) and 2024–2025 (24/25) winter seasons, clade 2.3.4.4b H5Nx HPAIVs caused multiple outbreaks on poultry farms and were detected in wild birds in South Korea.
Cha RM, Jang Y, Park MJ, Kim J, Kim JM, Lim EH, Heo GB, An SH, Lee KN, Lee YJ, Lee EK.   +10 more
europepmc   +2 more sources

Parental Provisioning in an Urban Apex Predator. [PDF]

Ecol Evol
We combine high‐definition webcams and citizen science to explore parental care in urban peregrine falcons from 30 locations across England between 2020 and 2023. By analysing detailed webcam footage, we quantified changes in prey type and delivery rates as chicks developed.
Drewitt EJA, Mak B, Cuthill IC, Thomas RJ.   +3 more
europepmc   +2 more sources

Mirror-mediated string-pulling task in Eurasian jays (Garrulus glandarius) [PDF]

Animal Cognition, 2021
AbstractMirror tasks can be used to investigate whether animals can instrumentally use a mirror to solve problems and can understand the correspondence between reflections and the real objects they represent. Two bird species, a corvid (New Caledonian crow) and a parrot (African grey parrot), have demonstrated the ability to use mirrors instrumentally ...
Baciadonna, Luigi, Cornero, Francesca, Clayton, Nicola, Emery, Nathan J   +3 more
openaire   +3 more sources

Testing two competing hypotheses for Eurasian jays’ caching for the future [PDF]

Scientific Reports, 2021
Abstract Previous research reported that corvids preferentially cache food in a location where no food will be available or cache more of a specific food in a location where this food will not be available. Here, we consider possible explanations for these prospective caching behaviours and directly compare two competing hypotheses ...
Amodio, Piero, Brea, Johanni, Farrar, Benjamin G., Ostojić, Ljerka, Clayton, Nicola S.   +4 more
openaire   +6 more sources

Current desires of conspecific observers affect cache-protection strategies in California scrub-jays and Eurasian jays [PDF]

Current Biology, 2017
Many corvid species accurately remember the locations where they have seen others cache food, allowing them to pilfer these caches efficiently once the cachers have left the scene [1] . To protect their caches, corvids employ a suite of different cache-protection strategies that limit the observers’ visual or acoustic access to the cache site [2,3 ...
Ostojić, Ljerka, Legg, Edward, Brecht, Katharina, Lange, Florian, Deininger, Chantal, Mendl, Michael, Clayton, Nicola S.   +6 more
  +12 more sources

Mirror stimulation in Eurasian jays ( Garrulus glandarius )

PeerJ, 2023
Mirror exposure elicits a wide range of behavioral responses, some of which have been considered as part of possible evidence of mirror self-recognition (MSR). These responses can range from social behaviors, indicating that an animal considers its own reflection as a conspecific, to mirror-guided and self-directed actions.
Baciadonna, L, Cornero, FM, Clayton, NS, Emery, NJ   +3 more
openaire   +4 more sources

Facing a Clever Predator Demands Clever Responses - Red-Backed Shrikes (Lanius collurio) vs. Eurasian Magpies (Pica pica). [PDF]

PLoS ONE, 2016
Red-backed shrikes (Lanius collurio) behave quite differently towards two common nest predators. While the European jay (Garrulus glandarius) is commonly attacked, in the presence of the Eurasian magpie (Pica pica), shrikes stay fully passive.
Michaela Syrová, Michal Němec, Petr Veselý, Eva Landová, Roman Fuchs   +4 more
doaj   +1 more source

Little evidence that Eurasian jays protect their caches by responding to cues about a conspecific’s desire and visual perspective

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, Benjamin G Farrar, Christopher Krupenye, Ljerka Ostojić, Nicola S Clayton   +4 more
doaj   +1 more source

The elusive perspective of a food thief

eLife, 2021
Eurasian jays fail to take into account the point of view and desire of other jays when hiding food they can eat later.
Claudia Zeiträg, Ivo Jacobs
doaj   +1 more source

Increase of avian Plasmodium circumflexum prevalence, but not of other malaria parasites and related haemosporidians in northern Europe during the past 40 years

Malaria Journal, 2022
Background Malaria is a health problem not only in human and veterinary medicine, but also in wildlife. Several theoretical studies have suggested that avian malaria transmission might be increasing in Europe.
Gediminas Valkiūnas, Mélanie Duc, Tatjana A. Iezhova   +2 more
doaj   +1 more source