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- Parrots will share currency to help their pals purchase food (2020) https://www.smithsonianmag.com/science-nature/parrots-share-currency-help-their-pals-purchase-food-180973917/ 101 comments
- Parrots Will Share Currency to Help Their Pals Purchase Food https://www.smithsonianmag.com/science-nature/parrots-share-currency-help-their-pals-purchase-food-180973917/ 14 comments science
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