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March 14 2013
Polly may want a cracker, but when a parrot wants a better deal, it will trade a so-so nut for an even better snack, a new study has found.
The discovery, published in the journal Biology Letters, demonstrates that birds can do business in their own way, wheeling and dealing with nuts. It also shows that they can exhibit remarkable self restraint, even performing better than some children.
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