Limited spread of innovation in a wild parrot, the kea (Nestor notabilis)
- 28 March 2006
- journal article
- Published by Springer Science and Business Media LLC in Animal Cognition
- Vol. 9 (3), 173-181
- https://doi.org/10.1007/s10071-006-0018-7
Abstract
In the local population of kea in Mount Cook Village, New Zealand, some keas open the lids of rubbish bins with their bill to obtain food scraps within. We investigated the extent to which this innovation has spread in the local population, and what factors limit the acquisition of bin opening. Only five males of 36 individually recognised birds were observed to have performed successful bin opening. With one exception there were always other keas present, watching successful bin opening. Seventeen additional individuals were seen to have benefitted from lid opening. Their foraging success was less than that of the bin openers. Social status of bin openers did not differ from scrounging males. Among the individuals that were regularly seen at the site of the bins but were not successful in bin opening, social status and the ratio of feeding directly from open bins correlated with the amount of opening attempts. We conclude that scrounging facilitated certain behavioural aspects of bin opening rather than inhibiting them. The fact that only 9% of opening attempts were successful, and the long period of time required to increase efficiency in lid opening shows that mainly individual experience, and to a lesser extent insight and social learning, play key roles in acquisition of the opening technique. The results indicate that the spread of innovative solutions of challenging mechanical problems in animals may be restricted to only a few individuals.Keywords
This publication has 37 references indexed in Scilit:
- Social learning strategiesLearning & Behavior, 2004
- Social learning in common ravens,Corvus coraxAnimal Behaviour, 1999
- Emulation learning and cultural learningBehavioral and Brain Sciences, 1998
- Differential Probability of “Coproduction” in Two Species of Macaque (Macaca tonkeana, M. mulatta)Ethology, 1992
- Producers, Scroungers, and Group ForagingThe American Naturalist, 1991
- Sexual Dimorphism in the Kea Nestor notabilisEmu - Austral Ornithology, 1991
- Exchangeable producer and scrounger roles in a captive flock of feral pigeons: a case for the skill pool effectAnimal Behaviour, 1986
- The logical stag: Adaptive aspects of fighting in red deer (Cervus elaphus L.)Animal Behaviour, 1979
- Das Spielverhalten der Keas (Nestor notabilis Gould) des Zürcher ZoosZeitschrift Fur Tierpsychologie, 1975
- Learning and Instinct in AnimalsJournal of Animal Ecology, 1964