AI Article Synopsis
- The study examined how jackdaws (a type of corvid) develop object permanence, despite not caching food like some other species.
- The research utilized specific tasks to identify when jackdaws reach different stages of object permanence, finding they achieve significant competence by around 61 days after hatching.
- The findings suggest that the lack of food-storing behavior doesn't negatively impact jackdaws' object permanence abilities, likely due to other ecological factors influencing their cognitive skills.
Article 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.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4417713 | PMC |
| http://dx.doi.org/10.1007/s10071-012-0581-z | DOI Listing |
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