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Vocal mimicry in Corvids [PDF]

Animal Cognition
Vocal mimicry, the copying of sounds produced by another species or the environment, is commonly described in vocal learners, such as songbirds. Understanding the functions of vocal mimicry can help to uncover the evolutionary drivers of vocal learning ...
Claudia A.F. Wascher, Gemini Waterhouse, Bret A. Beheim   +2 more
doaj   +5 more sources

Evolutionary drivers of caching behaviour in corvids [PDF]

Animal Cognition
Caching has recurrently evolved across a range of animal taxa to withstand fluctuations in food availability and in the context of intraspecific competition.
Fran Daw, Bret A. Beheim, Claudia A. F. Wascher   +2 more
doaj   +5 more sources

Editorial: vocal communication in corvids [PDF]

Animal Cognition
Corvids are one of the most prominent avian taxa for the study of animal behaviour and cognition, yet their vocal communication remains comparatively understudied.
Claudia A. F. Wascher, Valérie Dufour
doaj   +2 more sources

Neural Processes Underlying Tool Use in Humans, Macaques, and Corvids

Frontiers in Psychology, 2020
It was thought that tool use in animals is an adaptive specialization. Recent studies, however, have shown that some non-tool-users, such as rooks and jays, can use and manufacture tools in laboratory settings.
María J. Cabrera-Álvarez, Nicola S. Clayton   +1 more
doaj   +3 more sources

Wild jackdaws recognise the contact calls of their mate [PDF]

Animal Cognition
In stable social environments, the ability to recognise other group members and integrate individual cues with previous experience is likely to be beneficial in mediating social interactions.
Victoria E. Lee, Guillam E. McIvor, Alex Thornton   +2 more
doaj   +2 more sources

The Neophobia Hypothesis: nest decoration in birds may reduce predation by corvids [PDF]

Royal Society Open Science
Many birds suffer heavily from nest predation, selecting several behaviours to avoid the risk. Corvids are among the most serious nest predators. However, they are also among the most neophobic of any birds.
Magne Husby, Tore Slagsvold
doaj   +2 more sources

Occurrence of Chlamydiae in Corvids in Northeast Italy

Animals, 2022
Chlamydiaceae occurrence has been largely evaluated in wildlife, showing that wild birds are efficient reservoirs for avian chlamydiosis. In this study, DNA extracted from cloacal swabs of 108 corvids from Northeast Italy was screened for Chlamydiaceae ...
Rachid Aaziz, Karine Laroucau, Federica Gobbo, Daniela Salvatore, Christiane Schnee, Calogero Terregino, Caterina Lupini, Antonietta Di Francesco   +7 more
doaj   +3 more sources

Wildfire-Driven Shifts in Bird and Red Fox Activity: A Case Study from Biebrza National Park [PDF]

Biology
Fires of natural or anthropogenic origin shape some ecosystems on Earth; this disturbance can maintain the landscape and influence many processes like vegetation structure, carbon, and hydrological cycle, climate, and others [...]
Jakub Gryz, Dagny Krauze-Gryz, Michał Brach   +2 more
doaj   +2 more sources

Opportunistic Tool Use by Two Unexpected Corvid Species [PDF]

Ecology and Evolution
This Nature note reports the first documented instance of tool use in Sunda crows (Corvus enca) and provides additional evidence of this ability in house crows (Corvus splendens).
Tanita Giri, Elias Garcia‐Pelegrin
doaj   +2 more sources

Prevalence and Toxoplasma gondii Genotypes Circulating in Five Wild Corvid Species from Romania [PDF]

Pathogens
The apicomplexan parasite Toxoplasma gondii can potentially infect all warm-blooded animals, including birds, which, due to their high dispersal capabilities, are considered a significant candidate group of sentinel animals that reveal environmental ...
Călin Mircea Gherman, Anamaria Balea, Adriana Györke, Zsuzsa Kalmár, Angela Monica Ionică, Isabelle Villena, Furio Spano, Stéphane de Craeye, Vasile Cozma   +8 more
doaj   +2 more sources