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Ducatez, S.; Audet, J.N.; Lefebvre, L. |
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Title |
Independent appearance of an innovative feeding behaviour in Antillean bullfinches |
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Journal Article |
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Year |
2013 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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16 |
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3 |
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525-529 |
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Abstract |
Behavioural innovations have been largely documented in birds and are thought to provide advantages in changing environments. However, the mechanisms by which behavioural innovations spread remain poorly known. Two major mechanisms are supposed to play a fundamental role: innovation diffusion by social learning and independent appearance of the same innovation in different individuals. Direct evidence for the independent emergence of the same innovation in different individuals is, however, lacking. Here, we show that a highly localized behavioural innovation previously observed in 2000 in Barbados, the opening of sugar packets by Loxigilla barbadensis bullfinches, persisted more than a decade later and had spread to a limited area around the initial site. More importantly, we found that the same innovation appeared independently in other, more distant, locations on the same island. On the island of St-Lucia, 145 km from Barbados, we also found that the sister species of the Barbados bullfinch, the Lesser Antillean bullfinch Loxigilla noctis developed the same innovation independently. Finally, we found that a third species, the Bananaquit Coereba flaveola, exploited the bullfinches’ technical innovation to benefit from this new food source. Overall, our observations provide the first direct evidence of the independent emergence of the same behavioural innovation in different individuals of the same species, but also in different species subjected to similar anthropogenic food availability. |
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1435-9456 |
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Equine Behaviour @ team @ Ducatez2013 |
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5934 |
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Perusse, D.; Lefebvre, L. |
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Title |
Grouped sequential exploitation of food patches in a flock feeder, the feral pigeon |
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Year |
1985 |
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Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
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11 |
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1 |
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39-52 |
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Feral and laboratory flocks of rock doves ( ) show a pattern of grouped sequential exploitation when simultaneously presented with two dispersed, depleting patches of seed. This behavior contrasts with the ideal free distribution pattern shown when patches are small and concentrated. Grouped sequential exploitation consists of two phases: all pigeons first land together and feed at one patch, then leave one by one for the other patch. Departure times of individuals for the second patch are correlated with feeding rate at patch 1, which is in turn correlated with position in the dominance hierarchy. The decision to switch from patch 1 to patch 2 improves individual feeding rates in all cases, but is done slightly later than it should according to optimal foraging theory. |
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Equine Behaviour @ team @ |
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4227 |
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Bouchard, J.; Goodyer, W.; Lefebvre, L. |
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Title |
Social learning and innovation are positively correlated in pigeons (Columba livia) |
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Year |
2007 |
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Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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10 |
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2 |
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259-266 |
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Animals; Behavior, Animal/*physiology; Columbidae/*physiology; *Learning; *Problem Solving |
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When animals show both frequent innovation and fast social learning, new behaviours can spread more rapidly through populations and potentially increase rates of natural selection and speciation, as proposed by A.C. Wilson in his behavioural drive hypothesis. Comparative work on primates suggests that more innovative species also show more social learning. In this study, we look at intra-specific variation in innovation and social learning in captive wild-caught pigeons. Performances on an innovative problem-solving task and a social learning task are positively correlated in 42 individuals. The correlation remains significant when the effects of neophobia on the two abilities are removed. Neither sex nor dominance rank are associated with performance on the two tasks. Free-flying flocks of urban pigeons are able to solve the innovative food-finding problem used on captive birds, demonstrating it is within the range of their natural capacities. Taken together with the comparative literature, the positive correlation between innovation and social learning suggests that the two abilities are not traded-off. |
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Department of Biology, McGill University, 1205, Avenue Docteur Penfield, Montreal, Quebec, H3A 1B1, Canada |
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English |
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1435-9448 |
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PMID:17205290 |
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Equine Behaviour @ team @ |
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2425 |
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Author |
Lefebvre, L.; Juretic, N.; Nicolakakis, N.; Timmermans, S. |
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Title |
Is the link between forebrain size and feeding innovations caused by confounding variables? A study of Australian and North American birds |
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Journal Article |
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Year |
2001 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
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Volume |
4 |
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2 |
Pages |
91-97 |
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The short notes of ornithology journals feature new and unusual feeding behaviours, which, when systematically collated, could provide a quantitative estimate of behavioural flexibility in different bird groups. Previous studies suggest that taxonomic variation in the frequency of new behaviours (innovations) is correlated with variation in relative forebrain size. Recent work on primates shows, however, that observer bias can affect innovation frequency. We assess this possibility in birds via three estimates in North America and Australia: the number of full-length papers in academic journals, the frequency of photographs in birding magazines and a questionnaire on reporting bias given to ornithologists at a meeting. We also look at sampling effects due to single journal sources by doing a split-half analysis of our North American database (The Wilson Bulletin vs. six other journals) and adding three new Australian journals to the one we had used previously. In multiple regressions that also included species number per taxon, none of the potential biases could account for the correlation between forebrain size and innovation frequency. Species number was the best predictor of full-length paper frequency, which was the best predictor of photograph numbers. Ornithologists are not preferentially interested in innovative, large-brained taxa, suggesting that the correlation between innovations and neural substrate size is not a spurious effect of the biases examined here. |
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Equine Behaviour @ team @ |
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3284 |
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Author |
Lefebvre, L.; Giraldeau, L.-A. |
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Title |
Is social learning an adaptive specialisation? |
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Year |
1996 |
Publication |
Social learning in animals: The root of culture |
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107-128 |
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Academic Press. |
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San Diego |
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Heyes, C. M. ;B. G. Galef B. G..Jr. |
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978-0122739651 |
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Equine Behaviour @ team @ |
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4415 |
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Lefebvre, L.; Bouchard, J. |
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Title |
Social learning about food in birds |
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2003 |
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The Biology of Traditions |
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94-126 |
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Cambridge University Press |
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Cambridge |
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Fragaszy, D.M; Perry, S. |
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Englisch |
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978-0521815970 |
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Equine Behaviour @ team @ |
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5471 |
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