Tool making cockatoos adjust the lengths but not the widths of their tools to function - Auersperg, A. M. I.; Köck, C.; O’Hara, M.; Huber, L. (PloS one, 2018)
Keywords: Animal cognition; Animals; Biology and Life Sciences; Birds; Cardboard; Cockatoos; Cognitive ability; Female; Food; Information processing; Innovations; Learning; Male; Medicine and Health Sciences; Parrots; Reinforcement; Social Sciences; Tool use; Tool Use Behavior; Trends; Veterinary medicine; Austria