Results 21 to 30 of about 4,618 (252)

Crows Rival Monkeys in Cognitive Capacity

open access: yesScientific Reports, 2017
The present study compares the ‘bandwidth of cognition’ between crows and primates. Working memory is the ability to maintain and manipulate information over short periods of time – a core component of cognition. The capacity of working memory is tightly
Dmitry Balakhonov, Jonas Rose
doaj   +1 more source

Grass Management Regimes Affect Grasshopper Availability and Subsequently American Crow Activity at Airports

open access: yesHuman-Wildlife Interactions, 2017
With large expanses of open vegetation, airports serve as major attractants for numerous bird species, such as the American crow (Corvus brachyrhynchos), which can lead to high risk of bird–aircraft collision.
Laura A. Kennedy, Ken A. Otter
doaj   +1 more source

Performance in Object-Choice Aesop's Fable Tasks Are Influenced by Object Biases in New Caledonian Crows but not in Human Children. [PDF]

open access: yesPLoS ONE, 2016
The ability to reason about causality underlies key aspects of human cognition, but the extent to which non-humans understand causality is still largely unknown. The Aesop's Fable paradigm, where objects are inserted into water-filled tubes to obtain out-
Rachael Miller   +6 more
doaj   +1 more source

Intracellular Diversity of WNV within Circulating Avian Peripheral Blood Mononuclear Cells Reveals Host-Dependent Patterns of Polyinfection

open access: yesPathogens, 2023
Arthropod-borne virus (arbovirus) populations exist as mutant swarms that are maintained between arthropods and vertebrates. West Nile virus (WNV) population dynamics are host-dependent.
Dalit Talmi-Frank   +12 more
doaj   +1 more source

Screening of crows and waterfowls for Salmonella and Listeria monocytogenes infection [PDF]

open access: yesInternational Journal of One Health, 2019
Background and Aim: Wild birds can carry a number of potential human and animal pathogens. These birds can intrude into human habitats giving the opportunity to transmission of such infection.
Hanaa Mohamed Fadel, Amira Ahmed
doaj   +1 more source

New Caledonian crows learn the functional properties of novel tool types.

open access: yesPLoS ONE, 2011
New Caledonian crows were presented with Bird and Emery's (2009a) Aesop's fable paradigm, which requires stones to be dropped into a water-filled tube to bring floating food within reach.
Alex H Taylor   +5 more
doaj   +1 more source

Dennett, Darwin, and Skinner Crows

open access: yesEvolutionary Psychology, 2005
The central theme of this paper is the scientific viewpoint taken for understanding behavioral processes. Two classical viewpoints are formulated by Dennett (the intentional stance) and Tinbergen (Tinbergen's four questions).
Frans Blommaert, Ruud Janssen
doaj   +1 more source

West Nile Virus and High Death Rate in American Crows

open access: yesEmerging Infectious Diseases, 2004
We document effects of West Nile virus (WNV) on American Crows. More than two thirds of our crows died of WNV infection, peaking when the proportion of infected mosquitoes at roosts was greatest. WNV antibody prevalence in crows was low.
Sarah A. Yaremych   +5 more
doaj   +1 more source

Learning and motor inhibitory control in crows and domestic chickens

open access: yesRoyal Society Open Science, 2021
Cognitive abilities allow animals to navigate through complex, fluctuating environments. In the present study, we tested the performance of a captive group of eight crows, Corvus corone and 10 domestic chickens, Gallus gallus domesticus, in the cylinder ...
Claudia A. F. Wascher   +2 more
doaj   +1 more source

Targeted H2S Delivery System Attenuates Blood‐Spinal Cord Barrier Disruption after Spinal Cord Injury by Reshaping the Ferritinophagy Pathway

open access: yesAdvanced Science, EarlyView.
The αvβ3‐mediated SPRC@MPDA‐RGD targets broken endothelial cells and controllably releases SPRC. CSE is then activated to produce endogenous H2S, which inhibits ferritinophagy. In brief, H2S inhibits autophagy by activating the PI3K/Akt/mTOR pathway, thereby suppressing the ferroptosis process mediated by NCOA4, and ultimately promoting the ...
Zhiheng Chen   +11 more
wiley   +1 more source

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