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129 results for “jays”
Dataset for Male Eurasian jays flexibly alter their food sharing in line with partners' choices
<p>This is the raw data for Exp. 1 and Exp. 2 from "Investigating the flexibility of male Eurasian jays' food-sharing behavior' by Rachel C Crosby, Edward W Legg, Katharina F. Brecht, Michael T Mendl, Ljerka Ostojic and Nicola S. Clayton in a machine-readable format. It was previously pre-printed under the title of "Male Eurasian jays flexibly alter their food sharing in line with partners’ choices".</p> <p> </p>
Body size is associated with yearling breeding and extra-pair mating in the Island Scrub-Jay
<p>Large body size is an important determinant of individual fitness in many animal species, especially in island systems where habitat saturation may result in strong intraspecific competition for mates and breeding territories. Here we show that large body size is associated with benefits to yearling breeding and extra-pair mating in the Island Scrub-Jay (<i>Aphelocoma insularis</i>), endemic to Santa Cruz Island, California. This species is approximately 20% larger than its mainland congener, consistent with the island syndrome, indicating that body size may be a trait under selection. From 2009 to 2013, we quantified the reproductive success of a marked population of Island Scrub-Jays, tracked which yearlings acquired a breeding territory and bred, and measured the occurrence of extra-pair paternity. Two potential contributors to fitness were positively related to body size. Larger yearling males were more likely to breed, possibly due to greater behavioral dominance during aggressive encounters. Larger males were also less likely to lose paternity to extra-pair males and, anecdotally, extra-pair males were larger than the social male cuckolded. This study provides evidence that larger males may have a fitness advantage over smaller males by breeding earlier and avoiding paternity loss, but estimates of lifetime reproductive success are ultimately needed for Island Scrub-Jays and other long-lived species.</p>
Data from: Evidence for personality conformity, not social niche specialization in social jays
Animal personality traits are defined as consistent individual differences in behavior over time and across contexts. Occasionally this inflexibility results in maladaptive behavioral responses to external stimuli. However, in social groups inflexible behavioral phenotypes might be favored as this could lead to more predictable social interactions. Two hypotheses seek to describe the optimal distribution of personality types within groups. The social niche specialization hypothesis states that individuals within groups should partition social roles, like personality types, to avoid conflict. Whereas the conformity hypothesis states that individuals should assort with conspecifics of similar personality. However no research so far has compared these hypotheses using data from wild animal systems. We tested boldness in the wild on two species with different social systems, the Mexican Jay and California Scrub-Jay. We found support for the conformity hypothesis over the social niche specialization hypothesis because individuals within groups of the social species had more similar personalities, and consequently there was a statistically significant group effect. The most likely mechanism for this conformity is social learning of behaviors through development, but more explicit research on this is needed.
Data from: Steller's jays assess and communicate about predator risk using detection cues and identity
Predators can vary in the risk they pose, depending upon the factors such as body size, maneuverability, hunting strategy, and diet. Prey can also detect predators with different senses, such as seeing, hearing, or smelling them. We presented wild Steller's jays (Cyanocitta stelleri annectens) with visual cues (robotic raptors) or acoustic cues (call playbacks) of 4 different raptors to test how they assess risk and how this influences their alarm calls. The assessment of risk from different predator cues varied with different species of raptors: Jays responded to sharp-shinned hawks (Accipiter striatus) with an increase in latency to resume foraging regardless of whether they were seen or heard, whereas latency responses to northern goshawks (Accipiter gentilis) were longer if they were seen versus if they were heard. Furthermore, Steller's jays altered the acoustic structure of their alarm calls depending on the species of raptor and whether they saw or heard them. These results demonstrate that Steller's jay's assessment of risk involves an interaction between predator identity and predator detection cue and in response, they alter their acoustically-simple alarm calls in surprisingly nuanced ways.
John Jay Monument
The monument of John Jay (1805-1872) in Abney Park (about 100 metres south of the chapel on the west side of the path), Stoke Newington, London. John Jay was the mason responsible for erecting Abney Park Chapel. https://historicengland.org.uk/listing/the-list/list-entry/1257299 343 photos taken in July 2022 with a Sony a7R III and processed in Reality Capture. Source: Objaverse 1.0 / Sketchfab
Staging to join non-kin groups in a classical cooperative breeder, the Florida scrub-jay
<p>1. Why unrelated members form groups in animal societies remains a pertinent topic in evolutionary biology because benefits for group members often are not obvious. We studied subordinates that disperse to join unrelated social groups in the Florida scrub-jay Aphelocoma coerulescens, a cooperative breeding species mainly composed of kin-based groups. 2. We evaluated potential adaptive benefits of dispersing to become an unrelated helper (staging) versus remaining home and dispersing only to pair and breed (direct dispersal) to understand why non-kin-based groups form. 3. Using 35 years of demographic data, we quantified life history aspects of staging individuals and tested associations between social and ecological factors on the natal and staging territories. We compared fitness outcomes between dispersal strategies by analyzing survival, breeding recruitment, and direct reproductive output. We tested for sexual asymmetry potentially driven by differences in territory acquisition patterns and female-biased dispersal for this species. 4. Of birds that reached one-year-old, 28% staged at a non-natal territory before breeding or disappearing. Staging dispersers departed at younger ages and moved greater distances than direct dispersers. When looking at proximate factors on the natal territory associated with staging, males left groups with many same-sex helpers, while females often left when their father disappeared. For both sexes, staging individuals more likely came from high-quality territories and joined groups with fewer same-sex helpers than in their natal group. While staging and direct dispersers did not differ in survival or likelihood of becoming a breeder, staging males became breeders later and had lower lifetime reproductive success than direct dispersers. 5. In Florida scrub-jays, staging appears to be an alternative strategy for female helpers, but a best-of-a-bad-situation for males. This sexual asymmetry is consistent with males having more options than females to achieve higher reproductive success by breeding near home. Tradeoffs in cost-benefits of departing natal territory and joining unrelated groups as a helper seem to best explain alternative dispersal patterns, with optimal social queues primarily driving the benefits. This research highlights plasticity in dispersal behavior in response to social and environmental conditions and offers new perspective in our understanding of non-kin-based social groups.</p>
370 Jay St., Brooklyn, New York
My workplace in downtown Brooklyn Data source: [2014 USGS Post Sandy LiDAR scan of New York City](https://coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4920/) A note on the data extraction: http://av-vo.com/2018/12/25/usgs-lidar-nyc.html Source: Objaverse 1.0 / Sketchfab
Рис. 14. Mya (Arenomya) japonica Jay, 1857. Fig. 14. Mya (Arenomya) japonica Jay, 1857. in Bivalve mollusks of the intertidal zone of the Far Eastern seas of Russia
Рис. 14. Mya (Arenomya) japonica Jay, 1857. Fig. 14. Mya (Arenomya) japonica Jay, 1857.
Vortex input files -- Linking habitat and population viability analysis models of a metapopulation of Florida scrub-jays
<p>Vortex input files for manuscript "<span>Linking </span><span><span>habitat and population viability analysis models to account for <span>vegetation dynamics, habitat fragmentation, and social behavior of a metapopulation of Florida scrub-jays</span></span></span>" by R. C. Lacy, D. B. Breininger, et al. </p>
JWST spectra and best-fit SED models of massive quiescent galaxies from the Blue Jay survey.
<ul> <li>The JWST/NIRSpec spectra are stored as FITS tables which include wavelength (in angstrom, in rest-frame), calibrated flux, uncertainty, and best-fit model (in 1e-19 erg/s/cm^2/AA).</li> </ul>
A case report of an Eurasian Jay (Garrulus glandarius) attacking an incubating adult and depredating the eggs of the Japanese Tit (Parus minor)
<p>In May 2021, we opportunistically observed one Eurasian Jay (<em>Garrulus</em> <em>glandarius</em>) attacking an adult incubating Japanese Tit (<em>Parus</em> <em>minor</em>) and depredating nine tit eggs at a nestbox where a woodpecker had greatly enlarged the entrance. After the predation event, the Japanese tits abandoned the nest. We recommend that when using artificial nest boxes to protect hole-nesting birds, the appropriate entrance size should be proportional to the body size of the target species. This observation gives us a better understanding of the potential predators of secondary hole-nesting birds.</p>
Jay And Silent Bob Quick Stop
Hello! I love the work of Kevin Smith and want to share my first 3D Art. I have been studying the blender for about 2 months. The most difficult part in this work was to understand what kind of car was parked in the film:) p.s. chevrolet lumina 1993 Source: Objaverse 1.0 / Sketchfab
Data from: Evidence for personality conformity, not social niche specialization in social jays
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Body size is associated with yearling breeding and extra-pair mating in the Island Scrub-Jay
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Staging to join non-kin groups in a classical cooperative breeder, the Florida scrub-jay
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Data from: Multiple scales of fear: Foraging behavior of white-naped jays in semiarid landscapes
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Data from: Steller’s jays assess and communicate about predator risk using detection cues and identity
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Stable isotope composition of feathers and foraging behavior parallel bill shape divergence of Island Scrub-Jays (Aphelocoma insularis) in pine and oak habitats
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A case report of an Eurasian Jay (Garrulus glandarius) attacking an incubating adult and depredating the eggs of the Japanese Tit (Parus minor)
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Deep ecomorphological and genetic divergence in Steller’s Jays (Cyanocitta stelleri, Aves: Corvidae)
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
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