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Hooded crows (Corvus cornix) manufacture objects relative to a mental templateстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Smirnova Anna A., Bulgakova Leia R., Cheplakova Maria A., Jelbert Sarah A.
- Журнал: Animal Cognition
- Том: 27
- Номер: 36
- Год издания: 2024
- Издательство: Springer Verlag
- Местоположение издательства: Germany
- DOI: 10.1007/s10071-024-01874-6
- Аннотация: It was recently found that not only tool-specialized New Caledonian crows, but also Goffin cockatoos can manufacturephysical objects in accordance with a mental template. That is, they can emulate features of existing objects when theymanufacture new items. Both species spontaneously ripped pieces of card into large strips if they had previously learned thata large template was rewarded, and small strips when they previously learned that a small template was rewarded. AmongNew Caledonian crows, this cognitive ability was suggested as a potential mechanism underlying the transmission of naturaltool designs. Here, we tested for the same ability in another non-specialised tool user–Hooded crows (Corvus cornix). Crowswere exposed to pre-made template objects, varying first in colour and then in size, and were rewarded only if they chosepre-made objects that matched the template. In subsequent tests, birds were given the opportunity to manufacture versionsof these objects. All three crows ripped paper pieces from the same colour material as the rewarded template, and, crucially,also manufactured objects that were more similar in size to previously rewarded, than unrewarded, templates, despite thebirds being rewarded at random in both tests. Therefore, we found the ability to manufacture physical objects relative to amental template in yet another bird species not specialized in using or making foraging tools in the wild, but with a highlevel of brain and cognitive development.
- Добавил в систему: Смирнова Анна Анатольевна
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