keyword
MENU ▼
Read by QxMD icon Read
search

corvid

keyword
https://www.readbyqxmd.com/read/29774435/neophobia-does-not-account-for-motoric-self-regulation-performance-as-measured-during-the-detour-reaching-cylinder-task
#1
M K Stow, A Vernouillet, D M Kelly
The ability to restrain a prepotent response in favor of a more adaptive behavior, or to exert inhibitory control, has been used as a measure of a species' cognitive abilities. Inhibitory control defines a spectrum of behaviors varying in complexity, ranging from self-control to motoric self-regulation. Several factors underlying inhibitory control have been identified, however, the influence of neophobia (i.e., aversion to novelty) on inhibitory control has not received much attention. Neophobia is known to affect complex cognitive abilities, but whether neophobia also influences more basic cognitive abilities, such as motoric self-regulation, has received less attention...
May 17, 2018: Animal Cognition
https://www.readbyqxmd.com/read/29743545/caller-characteristics-influence-recruitment-to-collective-anti-predator-events-in-jackdaws
#2
Richard D Woods, Michael Kings, Guillam E McIvor, Alex Thornton
Across the animal kingdom, examples abound of individuals coming together to repel external threats. When such collective actions are initiated by recruitment signals, individuals may benefit from being selective in whom they join, so the identity of the initiator may determine the magnitude of the group response. However, the role of signaller discrimination in coordinating group-level responses has yet to be tested. Here we show that in wild jackdaws, a colonial corvid species, collective responses to anti-predator recruitment calls are mediated by caller characteristics...
May 9, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29675942/occurrence-of-plasmid-mediated-quinolone-resistance-genes-in-escherichia-coli-and-klebsiella-spp-recovered-from-corvus-brachyrhynchos-and-corvus-corax-roosting-in-canada
#3
Nicol Janecko, Dana Halova, Ivana Jamborova, Ivo Papousek, Martina Masarikova, Monika Dolejska, Ivan Literak
The spread of antimicrobial resistance from human activity derived sources to natural habitats implicates wildlife as potential vectors of antimicrobial resistance transfer. Wild birds, including corvid species can disseminate mobile genetic resistance determinants through feces. This study aimed to determine the occurrence of plasmid-mediated quinolone resistance (PMQR) genes in Escherichia coli and Klebsiella spp. isolates obtained from winter roosting sites of American crows (Corvus brachyrhynchos) and common ravens (Corvus corax) in Canada...
April 19, 2018: Letters in Applied Microbiology
https://www.readbyqxmd.com/read/29673693/profiling-in-wildlife-crime-recovery-of-human-dna-deposited-outside
#4
K Mcleish, S Ferguson, C Gannicliffe, S Campbell, P I T Thomson, L M I Webster
Incidents of bird of prey persecution receive a lot of media coverage in the UK, with investigations rarely recovering sufficient evidence to proceed to prosecution. One of the main challenges is to identify a suspect, as these offences are carried out in remote locations without witnesses, and crime scenes may not be found for days. However, traps, poisoned baits and bird of prey carcasses can be recovered from these crime scenes. This study aimed to determine whether reportable human DNA profiles could be recovered from any of these substrates after periods of time outside...
April 4, 2018: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/29643220/mesotocin-influences-pinyon-jay-prosociality
#5
J F Duque, W Leichner, H Ahmann, J R Stevens
Many species exhibit prosocial behaviour, in which one individual's actions benefit another individual, often without an immediate benefit to itself. The neuropeptide oxytocin is an important hormonal mechanism influencing prosociality in mammals, but it is unclear whether the avian homologue mesotocin plays a similar functional role in birds. Here, we experimentally tested prosociality in pinyon jays ( Gymnorhinus cyanocephalus ), a highly social corvid species that spontaneously shares food with others. First, we measured prosocial preferences in a prosocial choice task with two different pay-off distributions: Prosocial trials delivered food to both the subject and either an empty cage or a partner bird, whereas Altruism trials delivered food only to an empty cage or a partner bird (none to subject)...
April 2018: Biology Letters
https://www.readbyqxmd.com/read/29620454/wildlife-presence-and-interactions-with-chickens-on-australian-commercial-chicken-farms-assessed-by-camera-traps
#6
Angela Bullanday Scott, David Phalen, Marta Hernandez-Jover, Mini Singh, Peter Groves, Jenny-Ann L M L Toribio
The types of wildlife and the frequency of their visits to commercial chicken farms in Australia were assessed using infrared and motion-sensing camera traps. Cameras were set up on 14 free-range layer farms, three cage layer farms, two barn layer farms, five non-free-range meat chicken farms, and six free-range meat chicken farms in the Sydney basin region and South East Queensland. Wildlife visits were found on every farm type and were most frequent on cage layer farms (73%), followed by free-range layer farms (15%)...
March 2018: Avian Diseases
https://www.readbyqxmd.com/read/29576946/difficulties-when-using-video-playback-to-investigate-social-cognition-in-california-scrub-jays-aphelocoma-californica
#7
Katharina F Brecht, Ljerka Ostojić, Edward W Legg, Nicola S Clayton
Previous research has suggested that videos can be used to experimentally manipulate social stimuli. In the present study, we used the California scrub-jays' cache protection strategies to assess whether video playback can be used to simulate conspecifics in a social context. In both the lab and the field, scrub-jays are known to exhibit a range of behaviours to protect their caches from potential pilferage by a conspecific, for example by hiding food in locations out of the observer's view or by re-caching previously made caches once the observer has left...
2018: PeerJ
https://www.readbyqxmd.com/read/29517437/gastrointestinal-parasites-in-captive-and-free-ranging-birds-and-potential-cross-transmission-in-a-zoo-environment
#8
Patricio D Carrera-Játiva, Eric R Morgan, Michelle Barrows, Torsten Wronski
Gastrointestinal parasites are commonly reported in wild birds, but transmission amongst avifauna in zoological settings, and between these captive birds and wild birds in surrounding areas, remains poorly understood. A survey was undertaken to investigate the occurrence of gastrointestinal parasites in captive and free-ranging birds at Bristol Zoo Gardens between May and July 2016. A total of 348 fecal samples from 32 avian species were examined using the Mini-FLOTAC flotation method. Parasites were detected in 31% (45/145) of samples from captive birds and in 65...
March 2018: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
https://www.readbyqxmd.com/read/29491996/spatially-biased-dispersal-of-acorns-by-a-scatter-hoarding-corvid-may-accelerate-passive-restoration-of-oak-habitat-on-california-s-largest-island
#9
Mario B Pesendorfer, T Scott Sillett, Scott A Morrison
Scatter hoarding by corvids (crows, jays, magpies, and nutcrackers) provides seed dispersal for many large-seeded plants, including oaks and pines. When hoarding seeds, corvids often choose nonrandom locations throughout the landscape, resulting in differential survival of seeds. In the context of habitat restoration, such disproportional storing of seeds in areas suitable for germination and establishment can accelerate expansion and recovery of large-seeded tree populations and their associated ecosystems...
August 2017: Current Zoology
https://www.readbyqxmd.com/read/29338711/blood-parasite-infections-in-a-wild-population-of-ravens-corvus-corax-in-bulgaria
#10
Peter Shurulinkov, Lachezar Spasov, Georgi Stoyanov, Nayden Chakarov
BACKGROUND: Blood parasites have been studied intensely in many families of avian hosts, but corvids, a particularly cosmopolitan family, remain underexplored. Haemosporidian parasites of the common raven (Corvus corax) have not been studied, although it is the largest, most adaptable, and widespread corvid. Genetic sequence data from parasites of ravens can enhance the understanding of speciation patterns and specificity of haemosporidian parasites in corvids, and shed light how these hosts cope with parasite pressure...
January 16, 2018: Malaria Journal
https://www.readbyqxmd.com/read/29337074/in-situ-clock-shift-reveals-that-the-sun-compass-contributes-to-orientation-in-a-pelagic-seabird
#11
Oliver Padget, Sarah L Bond, Marwa M Kavelaars, Emiel van Loon, Mark Bolton, Annette L Fayet, Martyna Syposz, Stephen Roberts, Tim Guilford
Compass orientation is central to the control of animal movement from the scale of local food-caching movements around a familiar area in parids [1] and corvids [2, 3] to the first autumn vector navigation of songbirds embarking on long-distance migration [4-6]. In the study of diurnal birds, where the homing pigeon, Columba livia, has been the main model, a time-compensated sun compass [7] is central to the two-step map-and-compass process of navigation from unfamiliar places, as well as guiding movement via a representation of familiar area landmarks [8-12]...
January 22, 2018: Current Biology: CB
https://www.readbyqxmd.com/read/29316266/inference-by-exclusion-in-the-red-tailed-black-cockatoo-calyptorhynchus-banksii
#12
Lorraine Subias, Andrea S Griffin, David Guez
Inference by exclusion is the ability to select a given option by excluding the others. When designed appropriately, tests of this ability can reveal choices that cannot be explained by associative processes. Over the past decade, exclusion reasoning has been explored in several non-human taxonomic groups including birds, mainly in Corvids and Parrots. To increase our understanding of the taxonomic distribution of exclusion reasoning and therefore its evolution, we investigated exclusion performances in Red-tailed Black cockatoos (Calyptorhynchus banksii), an Australian relative of the Goffin cockatoo (Cacatua goffinia), using a food-finding task...
January 9, 2018: Integrative Zoology
https://www.readbyqxmd.com/read/29238522/multilocus-genetic-analyses-and-spatial-modeling-reveal-complex-population-structure-and-history-in-a-widespread-resident-north-american-passerine-perisoreus-canadensis
#13
Kimberly M Dohms, Brendan A Graham, Theresa M Burg
An increasing body of studies of widely distributed, high latitude species shows a variety of refugial locations and population genetic patterns. We examined the effects of glaciations and dispersal barriers on the population genetic patterns of a widely distributed, high latitude, resident corvid, the gray jay ( Perisoreus canadensis ), using the highly variable mitochondrial DNA (mtDNA) control region and microsatellite markers combined with species distribution modeling. We sequenced 914 bp of mtDNA control region for 375 individuals from 37 populations and screened seven loci for 402 individuals from 27 populations across the gray jay range...
December 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/29229413/constant-light-environment-suppresses-maturation-and-reduces-complexity-of-new-born-neuron-processes-in-the-hippocampus-and-caudal-nidopallium-of-a-diurnal-corvid-implication-for-impairment-of-the-learning-and-cognitive-performance
#14
S K Tahajjul Taufique, Abhilash Prabhat, Vinod Kumar
Periodic day-night environment shapes the temporal pattern in the behaviour and physiology (e.g. 24-h activity-rest and sleep-wake cycles) and the advanced brain function, such as learning, memory and decision making. In a previous study, we showed the abolition of 24-h rhythm in the activity-rest pattern, and an attenuated cognitive performance in diurnal Indian house crows (Corvus splendens) under constant light (no-night; LL) environment. Present study extended this, and investigated LL-induced effects on the neurogenesis (birth, maturation and neurite complexity of new born neurons) in the hippocampus and caudal nidopallium, the brain regions directly associated with learning and cognition in birds...
January 2018: Neurobiology of Learning and Memory
https://www.readbyqxmd.com/read/29142017/modelling-the-effects-of-phylogeny-and-body-size-on-within-host-pathogen-replication-and-immune-response
#15
Soumya Banerjee, Alan S Perelson, Melanie Moses
Understanding how quickly pathogens replicate and how quickly the immune system responds is important for predicting the epidemic spread of emerging pathogens. Host body size, through its correlation with metabolic rates, is theoretically predicted to impact pathogen replication rates and immune system response rates. Here, we use mathematical models of viral time courses from multiple species of birds infected by a generalist pathogen (West Nile Virus; WNV) to test more thoroughly how disease progression and immune response depend on mass and host phylogeny...
November 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/29128976/neurons-in-the-crow-nidopallium-caudolaterale-encode-varying-durations-of-visual-working-memory-periods
#16
Konstantin Hartmann, Lena Veit, Andreas Nieder
Adaptive sequential behaviors rely on the bridging and integration of temporally separate information for the realization of prospective goals. Corvids' remarkable behavioral flexibility is thought to depend on the workings of the nidopallium caudolaterale (NCL), a high-level avian associative forebrain area. We trained carrion crows to remember visual items for three alternating delay durations in a delayed match-to-sample task and recorded single-unit activity from the NCL. Sample-selective delay activity, a correlate of visual working memory, was maintained throughout different working memory durations...
January 2018: Experimental Brain Research. Experimentelle Hirnforschung. Expérimentation Cérébrale
https://www.readbyqxmd.com/read/28963599/adaptation-of-the-aesop-s-fable-paradigm-for-use-with-raccoons-procyon-lotor-considerations-for-future-application-in-non-avian-and-non-primate-species
#17
Lauren Stanton, Emily Davis, Shylo Johnson, Amy Gilbert, Sarah Benson-Amram
To gain a better understanding of the evolution of animal cognition, it is necessary to test and compare the cognitive abilities of a broad array of taxa. Meaningful inter-species comparisons are best achieved by employing universal paradigms that standardize testing among species. Many cognitive paradigms, however, have been tested in only a few taxa, mostly birds and primates. One such example, known as the Aesop's Fable paradigm, is designed to assess causal understanding in animals using water displacement...
November 2017: Animal Cognition
https://www.readbyqxmd.com/read/28929247/are-parrots-poor-at-motor-self-regulation-or-is-the-cylinder-task-poor-at-measuring-it
#18
Can Kabadayi, Anastasia Krasheninnikova, Laurie O'Neill, Joost van de Weijer, Mathias Osvath, Auguste M P von Bayern
The ability to inhibit unproductive motor responses triggered by salient stimuli is a fundamental inhibitory skill. Such motor self-regulation is thought to underlie more complex cognitive mechanisms, like self-control. Recently, a large-scale study, comparing 36 species, found that absolute brain size best predicted competence in motor inhibition, with great apes as the best performers. This was challenged when three Corvus species (corvids) were found to parallel great apes despite having much smaller absolute brain sizes...
November 2017: Animal Cognition
https://www.readbyqxmd.com/read/28899382/carrion-crows-corvus-corone-of-southwest-germany-important-hosts-for-haemosporidian-parasites
#19
Sandrine Schmid, Katrin Fachet, Anke Dinkel, Ute Mackenstedt, Friederike Woog
BACKGROUND: Avian malaria parasites (Plasmodium spp.) and other Haemosporida (Haemoproteus and Leucocytozoon spp.) form a diverse group of vector-transmitted blood parasites that are abundant in many bird families. Recent studies have suggested that corvids may be an important host for Plasmodium spp. and Leucocytozoon spp. METHODS: To investigate the diversity of Haemosporida of resident carrion crows (Corvus corone) and Eurasian Magpies (Pica pica) in southwest Germany, 100 liver samples of corvids were examined using a nested PCR method to amplify a 1063 bp fragment of the haemosporidian mitochondrial cytochrome b gene...
September 12, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28878059/can-hook-bending-be-let-off-the-hook-bending-unbending-of-pliant-tools-by-cockatoos
#20
I B Laumer, T Bugnyar, S A Reber, A M I Auersperg
The spontaneous crafting of hook-tools from bendable material to lift a basket out of a vertical tube in corvids has widely been used as one of the prime examples of animal tool innovation. However, it was recently suggested that the animals' solution was hardly innovative but strongly influenced by predispositions from habitual tool use and nest building. We tested Goffin's cockatoo, which is neither a specialized tool user nor a nest builder, on a similar task set-up. Three birds individually learned to bend hook tools from straight wire to retrieve food from vertical tubes and four subjects unbent wire to retrieve food from horizontal tubes...
September 13, 2017: Proceedings. Biological Sciences
keyword
keyword
116986
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"