| Records |
| Author |
Lefebvre, L.; Giraldeau, L.-A. |
| Title |
Is social learning an adaptive specialisation? |
Type |
Book Chapter |
| Year |
1996 |
Publication |
Social learning in animals: The root of culture |
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Issue |
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Pages  |
107-128 |
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| Publisher |
Academic Press. |
Place of Publication |
San Diego |
Editor |
Heyes, C. M. ;B. G. Galef B. G..Jr. |
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ISBN |
978-0122739651 |
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Equine Behaviour @ team @ |
Serial |
4415 |
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| Author |
Lefebvre, L.; Bouchard, J. |
| Title |
Social learning about food in birds |
Type |
Book Chapter |
| Year |
2003 |
Publication |
The Biology of Traditions |
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Issue |
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Pages |
94-126 |
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Cambridge University Press |
Place of Publication |
Cambridge |
Editor |
Fragaszy, D.M; Perry, S. |
| Language |
Englisch |
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ISBN |
978-0521815970 |
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Approved |
no |
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Equine Behaviour @ team @ |
Serial |
5471 |
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| Author |
Lefebvre, L.; Juretic, N.; Nicolakakis, N.; Timmermans, S. |
| Title |
Is the link between forebrain size and feeding innovations caused by confounding variables? A study of Australian and North American birds |
Type |
Journal Article |
| Year |
2001 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
4 |
Issue |
2 |
Pages |
91-97 |
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| Abstract |
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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no |
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Equine Behaviour @ team @ |
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3284 |
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| Author |
Perusse, D.; Lefebvre, L. |
| Title |
Grouped sequential exploitation of food patches in a flock feeder, the feral pigeon |
Type |
Journal Article |
| Year |
1985 |
Publication |
Behavioural Processes |
Abbreviated Journal |
Behav. Process. |
| Volume |
11 |
Issue |
1 |
Pages |
39-52 |
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| Abstract |
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 @ |
Serial |
4227 |
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| Author |
Ducatez, S.; Audet, J.-N.; Rodriguez, J.R.; Kayello, L.; Lefebvre, L. |
| Title |
Innovativeness and the effects of urbanization on risk-taking behaviors in wild Barbados birds |
Type |
Journal Article |
| Year |
2017 |
Publication |
Animal Cognition |
Abbreviated Journal |
Anim. Cogn. |
| Volume |
20 |
Issue |
1 |
Pages |
33-42 |
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| Abstract |
The effects of urbanization on avian cognition remain poorly understood. Risk-taking behaviors like boldness, neophobia and flight distance are thought to affect opportunism and innovativeness, and should also vary with urbanization. Here, we investigate variation in risk-taking behaviors in the field in an avian assemblage of nine species that forage together in Barbados and for which innovation rate is known from previous work. We predicted that birds from highly urbanized areas would show more risk-taking behavior than conspecifics from less urbanized parts of the island and that the differences would be strongest in the most innovative of the species. Overall, we found that urban birds are bolder, less neophobic and have shorter flight distances than their less urbanized conspecifics. Additionally, we detected between-species differences in the effect of urbanization on flight distance, more innovative species showing smaller differences in flight distance between areas. Our results suggest that, within successful urban colonizers, species differences in innovativeness may affect the way species change their risk-taking behaviors in response to the urban environment. |
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1435-9456 |
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no |
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Equine Behaviour @ team @ Ducatez2017 |
Serial |
6128 |
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| Author |
Dubois, F.; Giraldeau, L.-A.; Hamilton, I.M.; Grant, J.W.A.; Lefebvre, L. |
| Title |
Distraction sneakers decrease the expected level of aggression within groups: a game-theoretic model |
Type |
Journal Article |
| Year |
2004 |
Publication |
The American Naturalist |
Abbreviated Journal |
Am Nat |
| Volume |
164 |
Issue |
2 |
Pages |
E32-45 |
| Keywords |
*Aggression; Animals; Behavior, Animal/*physiology; Columbidae/*physiology; Competitive Behavior; Cooperative Behavior; *Game Theory; Hawks/*physiology; Models, Biological |
| Abstract |
Hawk-dove games have been extensively used to predict the conditions under which group-living animals should defend their resources against potential usurpers. Typically, game-theoretic models on aggression consider that resource defense may entail energetic and injury costs. However, intruders may also take advantage of owners who are busy fighting to sneak access to unguarded resources, imposing thereby an additional cost on the use of the escalated hawk strategy. In this article we modify the two-strategy hawk-dove game into a three-strategy hawk-dove-sneaker game that incorporates a distraction-sneaking tactic, allowing us to explore its consequences on the expected level of aggression within groups. Our model predicts a lower proportion of hawks and hence lower frequencies of aggressive interactions within groups than do previous two-strategy hawk-dove games. The extent to which distraction sneakers decrease the frequency of aggression within groups, however, depends on whether they search only for opportunities to join resources uncovered by other group members or for both unchallenged resources and opportunities to usurp. |
| Address |
Departement des Sciences Biologiques, Universite du Quebec a Montreal, Case postale 8888 Succursale Centre-Ville, Montreal, Quebec H3C 3P8, Canada. frede_dubois@yahoo.fr |
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English |
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1537-5323 |
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| Notes |
PMID:15278850 |
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no |
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2130 |
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