Relevant bibliographies by topics / Bird behaviour

Academic literature on the topic 'Bird behaviour'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

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Journal articles on the topic "Bird behaviour"

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Erfianto, Bayu, and Intan Muchtadi-Alamsyah. "Stability and Vulnerability of Bird Flocking Behaviour: A Mathematical Analysis." HAYATI Journal of Biosciences 26, no. 4 (December 28, 2019): 179. http://dx.doi.org/10.4308/hjb.26.4.179.

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Given a large number of birds in the flock, we mathematically investigate the mechanism the birds move in a collective behavior. We assume that each bird is able to know its position and velocity of other birds within a radius of communication. Thus, to be able to fly in the flock, a bird has to adjust its position and velocity according to his neighbors. For this purpose, first of all, we analyze how the connectedness of the bird interaction network affects the cohesion of the stable bird flock. We further analyze a condition when the flock is vulnerable, which is mathematically indicated by means of the presence of an articulation point in bird communication network.
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Zentall, Thomas. "Bird minds: Cognition and behaviour of Australian native birds." Animal Behaviour 114 (April 2016): 11–12. http://dx.doi.org/10.1016/j.anbehav.2016.01.018.

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Hammers, Martijn, and Lyanne Brouwer. "Rescue behaviour in a social bird: removal of sticky ‘bird-catcher tree’ seeds by group members." Behaviour 154, no. 4 (2017): 403–11. http://dx.doi.org/10.1163/1568539x-00003428.

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Rescue behaviour is a special form of cooperation in which a rescuer exhibits behaviours directed towards averting a threat to an endangered individual, thereby potentially putting itself at risk. Although rescue behaviour has been well-documented in experimental studies on rats and ants, published cases in other non-human animals are rare. Here, we report observations of rescue behaviour in the cooperatively breeding Seychelles warbler (Acrocephalus sechellensis). In this species, individuals sometimes become entangled in seed clusters of ‘bird-catcher trees’ (Pisonia grandis). Just one or a few of these sticky seeds can prevent Seychelles warblers to fly and may lead to mortality. In four cases, individuals were observed displaying behaviour aimed at removing sticky seeds from the feathers of an entangled individual belonging to their group. Intriguingly, the rescuing individuals engaged in this behaviour despite potentially risking entanglement. To our knowledge, this is the first recorded case of rescue behaviour in birds.
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MORRIS, SARA R. "BIRD NESTS AND CONSTRUCTION BEHAVIOUR." Wilson Bulletin 113, no. 4 (December 2001): 469. http://dx.doi.org/10.1676/0043-5643(2001)113[0469:]2.0.co;2.

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Poulson, Holger. "BREEDING EXPERIMENTS AND BIRD BEHAVIOUR." International Zoo Yearbook 3, no. 1 (June 28, 2008): 100–102. http://dx.doi.org/10.1111/j.1748-1090.1962.tb03417.x.

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Rapaport, Lisa G. "Parenting Behaviour: Babbling Bird Teachers?" Current Biology 16, no. 17 (September 2006): R675—R677. http://dx.doi.org/10.1016/j.cub.2006.08.012.

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Gross, Michael. "Tuning in to bird behaviour." Current Biology 31, no. 14 (July 2021): R879—R882. http://dx.doi.org/10.1016/j.cub.2021.07.008.

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Phibbs, D. V., P. J. Groves, and W. I. Muir. "Leg health of meat chickens: impact on welfare, consumer behaviour, and the role of environmental enrichment." Animal Production Science 61, no. 12 (2021): 1203. http://dx.doi.org/10.1071/an19511.

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The Australian and global chicken meat industries have benefited from rapid improvements in the efficiency of chicken meat production that have been predominantly achieved through genetic selection, optimisation of bird nutrition and improved bird health. However, this has also resulted in morphological changes in the bird with an increase in the prevalence of leg health disorders. Compromised leg health can cause pain and lameness and bodes poorly for bird wellbeing, bird mortality, and economic returns. There are also implications for the consumer who is increasingly mindful of animal welfare and is demanding more welfare friendly products. Accurate on-farm assessment of bird leg health has challenges due to the diversity of leg disorders and the variety of techniques used to assess their severity and impact. Overall prevalence of leg disorders shows great variability between properties (farms) and flocks. Opportunities to improve bird leg health have been the focus of considerable research which has frequently included an evaluation of environmental enrichment as a means to reduce lameness and improve bird mobility. To this end, currently in Australia, 78% of chicken meat is produced under the conditions of the Australian RSPCA Approved Farming Scheme, which requires perches in the birds’ environment. However, the value of perches in providing enrichment and improving bird welfare is unclear. Therefore, this review explores animal welfare and consumer attitudes towards meat chicken welfare, describes leg disorders, outlines techniques for assessing leg health and discusses opportunities to enrich the birds’ environment to improve bird mobility and leg health.
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Sherwin, C. M., C. M. Heyes, and C. J. Nicol. "Social learning and facilitation of operant key-pecking by domestic hens." Proceedings of the British Society of Animal Science 2002 (2002): 68. http://dx.doi.org/10.1017/s1752756200007249.

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It has been suggested that feather pecking becomes widespread in groups of birds because it is socially learnt. However, a bird pecking the feathers of another seldom gains obvious extrinsic reinforcement for this behaviour (the feather is not always eaten, or material pecked from the plumage). Two aspects of social learning that have received little attention are whether reinforcement of the bird performing the behaviour (the demonstrator) is required for the watching bird (the observer) to learn, and in addition, whether single or multiple exposures to the behaviour are required. In two experiments we used a model behaviour - operant key pecking - to examine the effects of reinforcement of demonstrators (experiment 1) and the effectiveness of repeated demonstrations (experiment 2) on social learning by domestic hens.
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Rolland, Jonathan, Frédéric Jiguet, Knud Andreas Jønsson, Fabien L. Condamine, and Hélène Morlon. "Settling down of seasonal migrants promotes bird diversification." Proceedings of the Royal Society B: Biological Sciences 281, no. 1784 (June 7, 2014): 20140473. http://dx.doi.org/10.1098/rspb.2014.0473.

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How seasonal migration originated and impacted diversification in birds remains largely unknown. Although migratory behaviour is likely to affect bird diversification, previous studies have not detected any effect. Here, we infer ancestral migratory behaviour and the effect of seasonal migration on speciation and extinction dynamics using a complete bird tree of life. Our analyses infer that sedentary behaviour is ancestral, and that migratory behaviour evolved independently multiple times during the evolutionary history of birds. Speciation of a sedentary species into two sedentary daughter species is more frequent than speciation of a migratory species into two migratory daughter species. However, migratory species often diversify by generating a sedentary daughter species in addition to the ancestral migratory one. This leads to an overall higher migratory speciation rate. Migratory species also experience lower extinction rates. Hence, although migratory species represent a minority (18.5%) of all extant birds, they have a higher net diversification rate than sedentary species. These results suggest that the evolution of seasonal migration in birds has facilitated diversification through the divergence of migratory subpopulations that become sedentary, and illustrate asymmetrical diversification as a mechanism by which diversification rates are decoupled from species richness.
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Dissertations / Theses on the topic "Bird behaviour"

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Barnett, Craig. "Food limitation and its effects on bird behaviour." Thesis, University of Canterbury. Zoology, 2001. http://hdl.handle.net/10092/6891.

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Stochastic dynamic programming (SDP) models make a number of predictions as to how birds should behave given different ecological conditions. These models are easily tested in the field, although there have been few studies of their predictions. In this thesis, I use predictions from SDP models to investigate the effects of food availability on three aspects of bird behaviour. I first examined how supplemental food affects daily patterns of weight gain in birds. SDP models predict that birds should converge on the same mass by the end of the day irrespective of their fat reserves at the beginning of the day. I tested this prediction by comparing the mass trajectories of 12 male New Zealand robins (Petroica australis) when they started the day with differences in fat reserves. Fat reserves were manipulated experimentally by feeding birds one day and comparing them on two control days. I also examined caching behaviour and singing behaviour throughout the experiment in response. As predicted, body mass converged to a similar value at the end of the day regardless of initial mass. Fed males also sang more than on control days and stored less food over the course of the day. Next, I examined the effect of supplemental feeding on the dawn chorus of silvereyes (Zosterops lateralis) by comparing the singing behaviour of 12 males between days with and without access to short-term supplementation. As predicted, I found that males increased their singing quantity and quality in response to supplementary food. Lastly, I examined how food supplementation influences incubation behaviour. With periodic cyclic behaviour such as incubation, SDP models predict that birds should decrease the time spent off the nest when they have greater access to food. I tested this prediction by comparing the incubation behaviour of silvereyes on days when they received supplementation compared with days when they had no supplementation. As predicted, the renewal time (time taken for birds to renew their energetic reserves) decreased in response to supplementation, while overall investment increased. The results from all chapters provide strong support for SDP models. These experiments show how even short-term changes in food availability can alter the behaviour of birds in ways that may ultimately be important in determining their reproductive success. My experiments reveal that there is much potential for the formulation and testing of these models in New Zealand species.
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Dowell, Simon Derek. "The ontogeny of anti-predator behaviour in game bird chicks." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257814.

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Bennun, Leon Alan. "Communal breeding in Grey-Capped Social Weavers (Pseudonigrita arnaudi)." Thesis, University of Oxford, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.235975.

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Roberts, J. G. "Studies of the flocking behaviour of Sanderlings, Calidris alba." Thesis, Durham University, 1990. http://etheses.dur.ac.uk/6248/.

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The behaviour of sanderlings, Calidris alba, was studied at Teesmouth, N. E. England. Flock sizes and within-flock spacing were related to factors such as substrate type, season, and prey distribution. Sightings of individually-identifiable colour-ringed birds showed that turnover was high. Individuals varied in their vagility and in the way in which they allocated their time between feeding sites. There was a high degree of consistency between winters in the distributions of individual birds. When individual sighting frequencies were taken into account, associations between individual sanderlings, in terms of both flock membership and of occurrences at the same sites on the same days, were non-significantly different from those expected by chance. Previously used methods for detecting non-random associations gave inadequate null models. Each individual appeared to make a decision about where to feed independently of the decisions made by any other particular individuals .A number of aspects of the dynamics of flocks were examined, including flock cohesion; how flocks built up and broke down; whether birds tended to move to the largest or smallest, the nearest or furthest flocks; the effects of disturbance on flock dynamics; and the relationship between group size and the distance flown between flocks. The responses of sanderlings to experimental disturbances tended to support the hypothesis that responses should be varied according to the costs and benefits of different courses of action rather than the hypothesis that birds should take flight as soon as a predator is sighted. Birds often break off from performing an activity in order to raise their heads (scan). Preening birds had shorter inter-scan intervals than feeding birds. Flock size and spacing explained only a small proportion of the variance in vigilance. Vigilance was greater in autumn than in winter. There was some evidence for both feeding and preening birds avoiding very short inter-scan intervals but not for the avoidance of long intervals. Sequences of inter-scan interval durations of preening birds were non-random.
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Nazal, M. I. M. "Inter-relationships between plant fruiting patterns, bird foraging behaviour and fruit pests." Thesis, University of Liverpool, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372679.

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Peake, Thomas M. "Variation in the vocal behaviour of the Corncrake Crex crex : potential for conservation." Thesis, University of Nottingham, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.363616.

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Healy, Susan D. "A comparative study of brain and behaviour in food-storing animals." Thesis, University of Oxford, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.276826.

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Vennerholm, Linn. "Ontogeny of personality in red junglefowl chicks, Gallus gallus." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-78996.

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Many studies have been performed on animals to study their behavior, but not as many on the development of behavior, and not yet on chickens. Therefore, 42 red junglefowls were tested in three Novel Arena, Novel Object and Tonic Immobility tests to investigate the ontogeny of personality. Several behaviors were stable over time in the Novel Arena and Novel Object tests, and are a part of the bird’s personality, while other behaviors were plastic. The stability of the behaviors increased over time. The decrease in duration of the Tonic Immobility can be due to decreased stress during the length of the study. The study showed that personality can be detected early in a chicken’s life, even though a lot of the observed behaviors change. Further studies are needed to figure out duration of the stability and why certain behaviors are stable.
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Lindblom, Emelie. "Traits and behaviour affecting social status in red junglefowl (Gallus gallus) hens." Thesis, Linköpings universitet, Institutionen för fysik, kemi och biologi, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79083.

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Social status is commonly established among individuals within groups of animals. Despite this common characteristic of social animals it is still unclear how individuals establish their status. I investigated the relationships between morphology, posture and behaviours with social status in red junglefowl hens. The hens tested were measured (weight, comb length, comb height and tarsus length) and exposed to three different behavioural tests (novel arena, novel object and interaction test). None of the morphological features were associated with social status. However, dominant hens initiated the first encounter in a dyad interaction and performed a higher proportion of aggressive encounters against the opponent. The dominant hens were also the ones displaying more spread tail feathers than the opponent after status being established. Aggressiveness and social status is strongly linked, showing that there is a scope of behaviours to affect the establishment of status.
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Dahlqvist, Veronica. "Why is the bird (re)tweeting? : Creating a simulation of retweeting behaviour on Twitter." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-129352.

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Social media is a big part of today’s society. But how do we know where the information we put out on the internet end up? This bachelor thesis is part of a bigger project where first year students at the cognitive science program at Linköping University will be taught about modeling of a social phenomenon. A lot can be learned about a phenomenon through modeling and simulation and that was the motivation for this bachelor thesis – to try to make a simulation of the spreading of information on social media. The social media platform that was selected was Twitter and the information spreading was narrowed down to retweeting of a tweet. The simulation was implemented in NetLogo – a modeling and simulation program. The simulation was based on important factors that contribute to a person’s willingness to retweet. The factors were found in published research reports. The result was a simulation of retweeting on Twitter that in some aspects resemble the real world phenomenon as it is depicted in published research reports. Towards the end of the report there is a discussion about what factors contributed to the resemblance or the difference between the world depicted in the published research reports and the simulation.
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Books on the topic "Bird behaviour"

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Britain), Wildlife Trusts (Great, ed. Understanding bird behaviour. London: New Holland, 2006.

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Weather and bird behaviour. 3rd ed. London: T & A D Poyser, 2004.

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Bird nests and construction behaviour. Cambridge: Cambridge University Press, 2000.

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Hackett, Paul M. W. The Complexity of Bird Behaviour. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-12192-1.

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Barnard, C. J. Gulls and plovers: The ecology and behaviour of mixed-species feeding groups. London: Croom Helm, 1985.

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Thompson, D. B. A., 1958-, ed. Gulls and plovers: The ecology and behaviour of mixed-species feeding groups. New York: Columbia University Press, 1985.

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Robert, Burton. Bird behavior. Edited by Burton Jane and Taylor Kim 1933-. New York, N.Y: Knopf, 1985.

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Moon, Lynnette. Bird Behavior: living together. Bothwell, WA: Wright Group, 1996.

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Garden bird confidential: Discover the hidden world of garden birds. London: Hamlyn, 2010.

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Kilham, Lawrence. On watching birds. Chelsea, Vt: Chelsea Green Pub. Co., 1988.

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Book chapters on the topic "Bird behaviour"

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Hackett, Paul M. W. "Studying Birds." In The Complexity of Bird Behaviour, 1–18. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-12192-1_1.

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Adderley, Simon. "Is It a Bird? The Social Entrepreneurial Superhero: Fact or Fiction?" In Entrepreneurial Behaviour, 283–315. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-04402-2_12.

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Hackett, Paul M. W. "Mapping Sentences and Facet Theory." In The Complexity of Bird Behaviour, 21–51. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-12192-1_2.

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Hackett, Paul M. W. "How to Develop a Mapping Sentence: The Example of Avian Sleep." In The Complexity of Bird Behaviour, 53–66. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-12192-1_3.

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Hackett, Paul M. W. "Complex Avian Behaviour and Cognition: A Mapping Sentence Approach." In The Complexity of Bird Behaviour, 67–85. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-12192-1_4.

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Hackett, Paul M. W. "Studying Avian Cognition in the Wild: Avian Psychometrics." In The Complexity of Bird Behaviour, 91–123. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-12192-1_5.

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Hackett, Paul M. W. "Interpreting Avian Play, Murmurations of Common Starlings and Oology." In The Complexity of Bird Behaviour, 125–45. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-12192-1_6.

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Hackett, Paul M. W. "Analysing Results from Research Using Traditional and Declarative Mapping Sentences." In The Complexity of Bird Behaviour, 147–56. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-12192-1_7.

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Hackett, Paul M. W. "Conclusions." In The Complexity of Bird Behaviour, 157–74. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-12192-1_8.

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Gunnarsson, S. "Lighting for laying hens: the effect of environmental factors on bird behaviour." In Livestock housing, 431–40. The Netherlands: Wageningen Academic Publishers, 2013. http://dx.doi.org/10.3920/978-90-8686-771-4_23.

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Conference papers on the topic "Bird behaviour"

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"Computational Intelligence Applied to Monitor Bird Behaviour." In International Conference on Data Communication Networking. SciTePress - Science and and Technology Publications, 2012. http://dx.doi.org/10.5220/0004068100230032.

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Teichman, H. C., and R. N. Tadros. "Analytical and Experimental Simulation of Fan Blade Behaviour and Damage Under Bird Impact." In ASME 1990 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1990. http://dx.doi.org/10.1115/90-gt-126.

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An extensive analytical and experimental program has been undertaken to investigate the Foreign Object Damage resistance capabilities of external components for small gas turbofan engines. A transient nonlinear impact analysis has been used to predict the structural response of fan blades under bird ingestion conditions. This analysis is based on finite elements, a 3-D bird load model and an interactive structure-to-bird contact algorithm. Experiments were designed and carried out to record large blade deformations during bird impact, and were used to validate and calibrate the analytical models. The analytical models and testing program are described, and dominant fan blade response and failure modes are presented. Predicted results demonstrate good correlation with test. Analysis application to fan blade design and other engine components is recommended.
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Bohari, Baizura, and Abdulnaser Sayma. "CFD Analysis of Effects of Damage Due to Bird Strike on Fan Performance." In ASME Turbo Expo 2010: Power for Land, Sea, and Air. ASMEDC, 2010. http://dx.doi.org/10.1115/gt2010-22365.

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Bird ingestion has been a hazard that affects the structural integrity and survivability of turbofan engines. It can result in deformation of one or more fan blades, in which case, the engine is likely to surge and not recover. Numerical studies and simulations of bird strikes have become essential to optimize the design of engine components simultaneously to increase the engine capabilities for acceptable damage tolerance. Good understanding of these phenomena and the implications on the behaviour of the flow field with respect to the damage affecting the fan blades are usually investigated using computational techniques and/or experimental methods. The purpose of this paper is to present a Computational Fluid Dynamics (CFD) method for the analysis of the aerodynamic behaviour of an aero-engine fan affected by a bird strike. NASA rotor 67 was used as a test case because of the availability of experimental data that can be used to calibrate the model for the undamaged fan. The undamaged fan characteristic was mapped using a modification to the methodology developed by Sayma (2007). In this method a downstream variable throttle is added which allows changing the operating point on the speed characteristic without having to change downstream boundary conditions. This approach allows for changes in fan operating point to come out of the calculation as opposed to those dictated by the downstream static pressure boundary conditions used in typical computations. The methodology is automated allowing for a sweep along a speed characteristic or along a working line in one calculation in the same way as a rig test is conducted. Agreement with experimental data when available was excellent. This provided the base line for the undamaged blades. A damaged blade was inserted among undamaged blades in the fan assembly and the fan characteristic was mapped for a range of rotational speeds. Two different degrees of damage were analysed in an attempt to establish a correlation between the extent of the damage and the locus of the stall boundary. It was found that small increments on the damage lead to significant reduction in stall margin particularly at higher rotational speeds.
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Madasseri Payyappalli, Manas, and A. M. Pradeep. "Understanding Unsteady Flow Behaviour in a Low Aspect Ratio Contra-Rotating Axial Fan Under Radially Distorted Inflow." In ASME Turbo Expo 2019: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/gt2019-90252.

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Abstract Contra-rotation has several advantages like swirl-free discharge, high pressure-rise per stage, and possibility of operating both the rotors at different speeds. With these merits, contra-rotating fan emerges as a competent technology for future gas turbine engines. During operation, gas turbine engines undergo situations like high angle of attack manoeuvres, large cross-winds, bird-hits, etc. which distort the flow at the inlet of the engine. A thorough understanding of the effect of distortion on low aspect ratio contra-rotating fans is missing in literature. This paper reports the consequences of radial distortion on the performance of a low aspect ratio contra-rotating fan. The uniform inlet flow is distorted radially using wire mesh screens. The unsteady data obtained from high response pressure sensors are analysed using Discrete Spatial Fourier Series (DSFS) and Morlet wavelet transform. Both Long Length Scale Disturbances (LLSD) or modal waves and Short Length Scale Disturbances (SLSD) or spikes are observed for different inflow conditions. The stage stalls primarily due to the instabilities arising at the tip region of rotor-1. Rotor-2 shows poor coherence in the disturbances prior to stall compared to that of rotor-1. Tip-distorted flow is dominated with SLSDs in the pre-stall region and hence a stall precursor is not observed whereas clean and hub-distorted flows show prominent LLSDs prior to stall. The radial distortions get redistributed at the exit of rotor-1 and hence, the distorted inflows do not severely lead to instabilities on rotor-2. In summary, this work explains in detail the development of unsteady flow phenomena occurring in a low-aspect ratio contra-rotating fan stage leading to stall and the way in which the system responds to it.
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Da Soghe, Riccardo, Bruno Facchini, Mirko Micio, and Daniele Coutandin. "Heat Transfer and Pressure Drop Analysis of a Turbine Casing Impingement Cooling System." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-68793.

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Heat transfer and discharge coefficient behaviour for a representative part of a turbine active cooling system were numerically investigated by means of an in-house code. This code has been developed in the framework of an internal research program and has been validated by experiments and CFD. The analysed system represents the classical open bird cage arrangement that consists of an air supply pipe with a control valve and the present system with a collector box and pipes, which distribute cooling air in circumferential direction of the casing. The cooling air leaves the ACC system through small holes at the bottom of the tubes. These tubes extend at about 180° around the casing and may involve a huge number of impinging holes; as a consequence, the impinging jets mass flow rate may vary considerably along the feeding manifold with a direct impact on the achievable heat transfer levels. This study focuses on the performance, in terms of heat transfer coefficient and pressure drop, of several impinging tube geometries. As a result of this analysis, several design solutions have been compared and discussed.
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Dotson, Corey, Geronimo Macias, and Kooktae Lee. "Energy-Balanced Leader-Switching Policy for Formation Rotation Control of Multi-Agent Systems Inspired by Bird Flocks." In ASME 2019 Dynamic Systems and Control Conference. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/dscc2019-9044.

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Abstract This paper addresses an energy-balanced leader-switching policy for formation rotation control of multi-agent systems inspired by bird flocks. Birds that flock in V-formation with a leader rotation strategy are able to travel longer distances due to reduced drag and therefore less energy expenditure. This flocking behavior with a leader rotation will result in more conservation of overall energy and will be particularly beneficial to migrating birds that should fly long distances without landing. In this paper, we propose an energy-balanced leader-switching policy inspired by this bird flocking behavior in order to increase the flight range for multi-agent systems. The formation control of multi-agent systems is achieved by the consensus algorithm, which is fully decentralized through the use of information exchanges between agents. The proposed leader-switching method is not necessarily incorporated with the consensus dynamics and thus, the leader-switching algorithm can be decoupled from formation control dynamics. Therefore, the proposed method can simplify the leader-switching algorithm, making it easy to implement. Moreover, we propose the analytic flight distance based on the energy consumption model for each agent. To test the validity of the developed method, several simulation results are presented.
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Hundekari, R., and S. Gururaja. "Low Velocity Impact Damage on CFRPs: A Parametric Study." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86228.

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Carbon Fiber Reinforced Plastics (CFRPs) are extensively used in modern aircraft structures due to their high specific strength and stiffness properties. Upon impact by the foreign objects, the strength and stiffness of CFRP structures reduces drastically which is of major concern for aircraft designers since aircraft structures often witness sudden impact events during their life cycle. Typical impact events include tool drop during manufacturing and maintenance, runway debris during take-offs/landings or bird strike events. In particular, low velocity impact (LVI) events have been found to be specially detrimental to the load-carrying capability of aero-structures. It is therefore very important to characterize the loss of strength and stiffness accompanying such impacts on composite structures. The present work presents an idealized problem of LVI on a square CFRP plate using a spherical impactor. A parametric study has been carried out to investigate the behaviour of CFRP plate under varying impactor velocity, size, laminate thickness and stacking sequence. Impact damage initiation data has been developed for the parameters considered using the numerical framework developed for LVI. It is believed that the numerical simulations discussed in this paper will help aircraft designers to predict the response of different laminate systems under various impact scenarios and will guide them to choose appropriate material system.
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8

Atanbori, John, Wenting Duan, John Murray, Kofi Appiah, and Patrick Dickinson. "A Computer Vision Approach to Classification of Birds in Flight from Video Sequences." In Machine Vision of Animals and their Behaviour Workshop 2015. British Machine Vision Association, 2015. http://dx.doi.org/10.5244/c.29.mvab.3.

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9

"BiRD'19: BiRD'19 - International Workshop on Behavior analysis and Recognition for knowledge Discovery - Program." In 2019 IEEE International Conference on Pervasive Computing and Communications Workshops (PerCom Workshops). IEEE, 2019. http://dx.doi.org/10.1109/percomw.2019.8730878.

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10

Kabakchieva, Tsvetelina. "MARKET ANALYSIS OF "BIRD SLAUGHTERHOUSE" BERKOVITSA." In AGRIBUSINESS AND RURAL AREAS - ECONOMY, INNOVATION AND GROWTH 2021. University publishing house "Science and Economics", University of Economics - Varna, 2021. http://dx.doi.org/10.36997/ara2021.152.

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The transition to a market economy has put meat companies in a new state of operation. They are characterized by a high degree of uncertainty, increasing competition and a constant struggle for markets. The processes of realization of the finished products have become significantly more complicated. The behavior of the companies on the market, the economic results and the development of the enterprises depend on the orientation of the management in the market conditions. The purpose of the report is to make a situational - segmentation analysis of "Bird Slaughterhouse" Berkovitsa.
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Reports on the topic "Bird behaviour"

1

Herman, R., and S. O’Brien. Microclimate Influence on Bird Arrival Behavior Field Campaign Report. Office of Scientific and Technical Information (OSTI), March 2016. http://dx.doi.org/10.2172/1248495.

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2

Brown, Jeffrey, and Scott Weisbenner. Is a Bird in Hand Worth More than a Bird in the Bush? Intergenerational Transfers and Savings Behavior. Cambridge, MA: National Bureau of Economic Research, January 2002. http://dx.doi.org/10.3386/w8753.

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Morrison, M. L. Bird Movements and Behaviors in the Gulf Coast Region: Relation to Potential Wind-Energy Developments. Office of Scientific and Technical Information (OSTI), June 2006. http://dx.doi.org/10.2172/884690.

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4

Clara Cooper-Mullin, Clara Cooper-Mullin. Should I stay or should I go? Connecting bird behavior during migration to fat stores and antioxidant capacity. Experiment, May 2016. http://dx.doi.org/10.18258/7159.

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Thelander, C. G., K. S. Smallwood, and L. Rugge. Bird Risk Behaviors and Fatalities at the Altamont Pass Wind Resource Area: Period of Performance, March 1998--December 2000. Office of Scientific and Technical Information (OSTI), December 2003. http://dx.doi.org/10.2172/15006013.

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