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- Title
Ontogeny of object permanence in a non-storing corvid species, the jackdaw ( Corvus monedula).
- Authors
Ujfalussy, Dorottya; Miklósi, Ádám; Bugnyar, Thomas
- Abstract
The aim of the present study was to investigate the ontogeny of object permanence in a non-caching corvid species, the jackdaw ( Corvus monedula). Jackdaws are often presented as typical examples of non-storing corvids, as they cache either very little or not at all. We used Uzgiris and Hunt's Scale 1 tasks to determine the age at which the certain stages set in and the final stage of this capacity that is reached. Our results show that the lack of food-storing behaviour is not associated with inferior object permanence abilities in the jackdaw, as our subjects ( N = 19) have reached stage 5 competence (to follow successive visible displacements) at the average age of 61 days post-hatch and showed some evidence of stage 6 competence (to follow advanced invisible displacements) at 81 days post-hatch and thereafter. As we appreciate that object permanence abilities have a very wide ecological significance, our positive results are probably the consequence of other, more fundamental ecological pressures, such as nest-hole reproduction or prey-predator interactions.
- Subjects
ONTOGENY; OBJECT permanence (Psychology); JACKDAW; UZGIRIS-Hunt Scales of Psychological Development in Infancy; FOOD storage; PREDATION
- Publication
Animal Cognition, 2013, Vol 16, Issue 3, p405
- ISSN
1435-9448
- Publication type
Article
- DOI
10.1007/s10071-012-0581-z