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Author |
Liker, A.; Bókony, V. |
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Title |
Larger groups are more successful in innovative problem solving in house sparrows |
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Journal Article |
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2009 |
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Proceedings of the National Academy of Sciences of the United States of America |
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Proc Natl Acad Sci USA |
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106 |
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19 |
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7893-7898 |
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Abstract |
Group living offers well-known benefits to animals, such as better predator avoidance and increased foraging success. An important additional, but so far neglected, advantage is that groups may cope more effectively with unfamiliar situations through faster innovations of new solutions by some group members. We tested this hypothesis experimentally by presenting a new foraging task of opening a familiar feeder in an unfamiliar way to house sparrows in small and large groups (2 versus 6 birds). Group size had strong effects on problem solving: sparrows performed 4 times more and 11 times faster openings in large than in small groups, and all members of large groups profited by getting food sooner (7 times on average). Independently from group size, urban groups were more successful than rural groups. The disproportionately higher success in large groups was not a mere consequence of higher number of attempts, but was also related to a higher effectiveness of problem solving (3 times higher proportion of successful birds). The analyses of the birds' behavior suggest that the latter was not explained by either reduced investment in antipredator vigilance or reduced neophobia in large groups. Instead, larger groups may contain more diverse individuals with different skills and experiences, which may increase the chance of solving the task by some group members. Increased success in problem solving may promote group living in animals and may help them to adapt quickly to new situations in rapidly-changing environments. |
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Equine Behaviour @ team @ |
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6538 |
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Author |
Morand-Ferron, J.; Quinn, J.L. |
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Title |
Larger groups of passerines are more efficient problem solvers in the wild |
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Journal Article |
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2011 |
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Proceedings of the National Academy of Sciences of the United States of America |
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Proc Natl Acad Sci USA |
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108 |
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38 |
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15898-15903 |
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Group living commonly helps organisms face challenging environmental conditions. Although a known phenomenon in humans, recent findings suggest that a benefit of group living in animals generally might be increased innovative problem-solving efficiency. This benefit has never been demonstrated in a natural context, however, and the mechanisms underlying improved efficiency are largely unknown. We examined the problem-solving performance of great and blue tits at automated devices and found that efficiency increased with flock size. This relationship held when restricting the analysis to naive individuals, demonstrating that larger groups increased innovation efficiency. In addition to this effect of naive flock size, the presence of at least one experienced bird increased the frequency of solving, and larger flocks were more likely to contain experienced birds. These findings provide empirical evidence for the “pool of competence” hypothesis in nonhuman animals. The probability of success also differed consistently between individuals, a necessary condition for the pool of competence hypothesis. Solvers had a higher probability of success when foraging with a larger number of companions and when using devices located near rather than further from protective tree cover, suggesting a role for reduced predation risk on problem-solving efficiency. In contrast to traditional group living theory, individuals joining larger flocks benefited from a higher seed intake, suggesting that group living facilitated exploitation of a novel food source through improved problem-solving efficiency. Together our results suggest that both ecological and social factors, through reduced predation risk and increased pool of competence, mediate innovation in natural populations. |
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Equine Behaviour @ team @ |
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6539 |
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Kräußlich, H.; Brem, G. |
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Tierzucht und allgemeine Landwirtschaftslehre für Tiermediziner |
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1997 |
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Enke |
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Stuttgart |
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Equine Behaviour @ team @ |
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6542 |
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Author |
Nissen, J. |
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Title |
Enzyklopädie der Pferderassen |
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1998 |
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Kosmos |
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Stuttgart |
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Equine Behaviour @ team @ |
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6543 |
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Krösbacher, A. E. |
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Das Arabische Vollblut: Eine kontrovers diskutierte Rasse: Was steckt wirklich hinter der Zucht dieser edlen Pferde? |
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2008 |
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Bachelor's thesis |
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University for Veterinarian Medicine Vienna |
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Vienna |
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Equine Behaviour @ team @ |
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6544 |
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Author |
Bödeker, E. |
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Title |
Maultierzucht und Maultierhaltung |
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1908 |
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Handbuch der gesamten Landwirtschaft. |
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3 |
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46 |
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Max Jänecke |
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Hannover |
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Equine Behaviour @ team @ |
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6545 |
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Author |
Greenberg, R. |
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Title |
The role of neophobia and neophilia in the development of innovative behavour in birds |
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2003 |
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Animal Innovation |
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Oxford University Press |
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Oxford |
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S. M. Reader and K. N. Laland |
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Equine Behaviour @ team @ |
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6547 |
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Author |
Reader, S. M.; MacDonald, K. |
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Title |
Environmental variability and primate behavioural flexibiity |
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2003 |
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Animal Innovation |
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83-116 |
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Oxford University Press |
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Oxford |
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Reader, S. M.; Laland, K. L. |
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Equine Behaviour @ team @ |
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6548 |
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Author |
Bateson, P. |
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Title |
Play, playfulness, creativity and innovation. |
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2014 |
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Animal Behavior and Cognition |
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Anim. Behav. Cogn. |
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1 |
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2 |
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99-112 |
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Equine Behaviour @ team @ |
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6553 |
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Author |
Thornton Alex; Lukas Dieter |
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Title |
Individual variation in cognitive performance: developmental and evolutionary perspectives |
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2012 |
Publication |
Philosophical Transactions of the Royal Society B: Biological Sciences |
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Philos Trans R Soc Lond B Biol Sci |
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367 |
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1603 |
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2773-2783 |
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Royal Society |
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doi: 10.1098/rstb.2012.0214 |
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Equine Behaviour @ team @ |
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6555 |
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