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Parrots Think They’re So Smart. Now They’re Bartering Tokens for Food. (NYT), Change Log

https://www.nytimes.com/2018/09/11/science/what-makes-parrots-so-smart.html

By James Gorman | First archived on September 11, 2018, 2:59 a.m.

Headline Date/Time EST Archived Diff
Parrots Think They’re So Smart. Now They’re Bartering Tokens for Food. September 17, 2018, 2:25 p.m. (Compare with previous)
Parrots Think They’re So Smart. Now They’re Bartering Tokens for Food. September 11, 2018, 5:46 a.m. (Compare with previous)
Parrots Think They’re So Smart. Now They’re Bartering Tokens for Food September 11, 2018, 2:59 a.m.