Cockatoos
adjust length, but not width, when making their cardboard tools
Date: November
7, 2018
Source: PLOS
Goffin's
cockatoos can tear cardboard into long strips as tools to reach food -- but
fail to adjust strip width to fit through narrow openings, according to a new
study.
Goffin's
cockatoos can tear cardboard into long strips as tools to reach food -- but
fail to adjust strip width to fit through narrow openings, according to a study
published November 7, 2018 in the open-access journal PLOS ONE by
A.M.I. Auersperg from the Medical University of Vienna, Austria, and
colleagues.
The
Goffin's cockatoo (Cacatua goffiniana)
is a type of parrot. Captive Goffins are capable of inventing and manipulating
tools, even though they aren't known to use tools habitually. The authors of
the present study investigated two questions: do Goffins adjust tool properties
to save effort, and if so, how accurately can they adjust tool dimensions for
the task? The authors supplied six adult cockatoos with large cardboard sheets
to tear into strips as tools for the testing apparatus: a food platform with a
food reward set at varying distances (4-16cm) behind a small opening which also
varied in width (1-2cm).
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