5F331EE3-274E-4340-8E72-F946CDE31D24What makes a good tool user? A species-wide experimental study of the Hawaiian crowResearch GrantBB/S018484/12512EF1C-401B-4222-9869-A770D4C5FAC7BBSRCINCOME_ACTUAL506827324AB6FC-DFC5-4F47-A0D9-79C0AC3B8CAANew Caledonian crows keep 'valuable' hooked tools safer than basic non-hooked tools.eLife7da8305f154c70a5677da13ae43c38d2Klump BC2021-01-01http://dx.doi.org/10.7554/elife.6482934930523http://ukpmc.ac.uk/abstract/MED/349305232050-084Xhttp://europepmc.org/abstract/MED/3493052310Journal Article/Review61f3e36e7d7641.09613805