Results 31 to 40 of about 1,057 (155)
Animals, 2021 To study the evolution of humans’ cooperative nature, researchers have recently sought comparisons with other species. Studies investigating corvids, for example, showed that carrion crows and azure-winged magpies delivered food to group members when ...
Lisa Horn +3 more
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Social learning about dangerous people by wild jackdaws [PDF]
Royal Society Open Science, 2019 For animals that live alongside humans, people can present both an opportunity and a threat. Previous studies have shown that several species can learn to discriminate between individual people and assess risk based on prior experience.
Victoria E. Lee +3 more
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Wild jackdaws are wary of objects that violate expectations of animacy [PDF]
Royal Society Open Science, 2018 Nature is composed of self-propelled, animate agents and inanimate objects. Laboratory studies have shown that human infants and a few species discriminate between animate and inanimate objects.
Alison L. Greggor +3 more
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Ecosphere, 2022 Generalist species can exhibit individual specialization (IS), where individuals adopt specialized foraging behaviors not attributable to age, sex, or social dominance.
Elena H. West, Harrison H. Jones
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Evolutionary drivers of caching behaviour in corvids. [PDF]
Anim CognAbstract Caching has recurrently evolved across a range of animal taxa to withstand fluctuations in food availability and in the context of intraspecific competition. It is widespread in the corvid family, which exhibit considerable interspecific variation in their behavioural and morphological adaptations to caching.
Daw F, Beheim BA, Wascher CAF.
europepmc +5 more sources
Testing systems of avian perch deterrents on electric power distribution poles in sage-brush habitat
Human-Wildlife Interactions, 2017 In Lincoln County, Washington, USA, greater sage-grouse (Centrocercus urophasianus) and Columbian sharp-tailed grouse (Tympanuchus phasianellus columbianus) are managed as reintroduced and augmented populations, respectively.
James F. Dwyer, Kerrin W. Doloughan
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Rapid Learning and Long-Term Memory for Dangerous Humans in Ravens (Corvus corax)
Frontiers in Psychology, 2020 Like many predatory species, humans have pronounced individual differences in their interactions with potential prey: some humans pose a lethal threat while others may provide valuable resources.
C. R. Blum +4 more
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The Role of Birds of the Family Corvidae in Transmitting Sarcocystis Protozoan Parasites
Animals, 2021 Members of the family Corvidae are ecologically flexible omnivorous birds, particularly adaptive to urban habitats, and living in proximity to humans; these birds may serve as definitive hosts (DH) for Sarcocystis spp., but research about this is lacking.
Evelina Juozaitytė-Ngugu +5 more
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Biological Reviews, EarlyView.ABSTRACT Tool use research has long made the distinction between tool using that is considered learned and flexible, and that which appears to be instinctive and stereotyped. However, animals with an inherited tool use specialisation can exhibit flexibility, while tool use that is spontaneously innovated can be limited in its expression and facilitated
Jennifer A. D. Colbourne +1 more
wiley +1 more source
Corvids exhibit dynamic risk assessment during escape [PDF]
Behavioural Processes, 2020 It is widely accepted that stationary prey are able to carefully assess the risk levels associated with an approaching predator to make informative decisions on when to escape. However, little is known about subsequent decision-making process. We set out to compare whether escape durations of three species of corvids differ depending on how a human ...
Kunter, Tätte +2 more
openaire +2 more sources