Supplementary materials to BEH 3776

<p>  </p> <p><strong>Figure A1. </strong>Tool-use apparatus. (a) Tool-use apparatus seen from the side with stick tool inserted between the transparent walls. (b) Apparatus seen from above next to the stick tool and digitally inserted ruler.</p> <p><strong>Table A1.</strong> Ethogram of behaviours displayed towards the tool use set-up and average occurrences of the behaviours observed during the study (<em>N</em> = 11 birds; mean ± standard deviation). Tool use as a behaviour was not included in the ethogram because it was only displayed once by a single bird.</p> <p><strong>Table A2. </strong>Total amount of time (min) each bird was presented the tool use apparatus.</p> <p><strong>Table A3. </strong>Number of times each bird pulled the stick to acquire food.</p> <p><strong>Video 1. </strong>Australian magpies pulling a stick to acquire food.</p> <p><strong>Video 2. </strong>Australian magpie using a stick tool to extract food.</p>