M. I. Auersperg, Alice Borasinski, Stefan Laumer, Isabelle Kacelnik, Alex Electronic supplementary methods and results from Goffin's cockatoos make the same tool type from different materials Here we elaborate supplementary information on A) subjects and ethics; B) order of conditions for each individual; C) supplementary resuls; D) images of successful tools made. innovation;tool manufacture;parrot 2016-11-01
    https://rs.figshare.com/articles/journal_contribution/Electronic_supplementary_methods_and_results_from_Goffin_s_cockatoos_make_the_same_tool_type_from_different_materials/4154265
10.6084/m9.figshare.4154265.v1