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23. Allospecific vocal learning by Grey parrots (Psittacus erithacus): A failure of videotaped instruction under certain conditions. Pepperberg IM, Naughton JR, Banta PA. Behav Processes; 1998 Feb; 42(2-3):139-58. PubMed ID: 24897459 [Abstract] [Full Text] [Related]
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