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Author (up) Pepperberg, I.M. doi  openurl
  Title “Insightful” string-pulling in Grey parrots (Psittacus erithacus) is affected by vocal competence Type Journal Article
  Year 2004 Publication Animal Cognition Abbreviated Journal Anim. Cogn.  
  Volume 7 Issue 4 Pages 263-266  
  Keywords Animals; *Association Learning; *Discrimination Learning; Humans; Male; *Parrots; *Problem Solving; Verbal Behavior; Verbal Learning; *Vocalization, Animal  
  Abstract Four Grey parrots (Psittacus erithacus) were tested on their ability to obtain an item suspended from a string such that mutiple, repeated, coordinated beak-foot actions were required for success (e.g., Heinrich 1995). Those birds with little training in referential English requests (e.g. “I want X”) succeeded, whereas birds who could request the suspended item failed to obtain the object but engaged in repeated requesting.  
  Address MIT School of Architecture and Planning, Bldg 7-231, 77 Massachusetts Ave, MA 02139, Cambridge, USA. impepper@media.mit.edu  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language English Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1435-9448 ISBN Medium  
  Area Expedition Conference  
  Notes PMID:15045620 Approved no  
  Call Number Equine Behaviour @ team @ Serial 2537  
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