Can hook-bending be let off the hook? Bending/unbending of pliant tools by cockatoos

Goffin's cockatoos make the same tool type from different materials

(2016) Alice M. I. Auersperg et al.   Biology Letters

BORIS: a free, versatile open-source event-logging software for video/audio coding and live observations

(2016) Olivier Friard et al.   Methods in Ecology and Evolution

Tool bending in New Caledonian crows

(2016) Christian Rutz et al.   Royal Society Open Science

Flexible decision-making relative to reward quality and tool functionality in Goffin cockatoos (Cacatua goffiniana)

(2016) I. B. Laumer et al.   Scientific Reports

Hook tool manufacture in New Caledonian crows: behavioural variation and the influence of raw materials

(2015) Barbara C. Klump et al.   BMC BIOLOGY

Social transmission of tool use and tool manufacture in Goffin cockatoos (Cacatua goffini)

(2014) A. M. I. Auersperg et al.   PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES

Spontaneous innovation in tool manufacture and use in a Goffin’s cockatoo

(2012) Alice M.I. Auersperg et al.   CURRENT BIOLOGY

Insightful problem solving and creative tool modification by captive nontool-using rooks

(2009) C. D. Bird et al.   PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA