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Presence of conspecifics increases parrots´ willingness to participate in string pulling tasks http://t.co/adtINwj1xg
Presence of conspecifics increases parrots´ willingness to participate in string pulling tasks http://t.co/adtINwj1xg
Testing parrots individually versus in their social group doesn't affect their performance in string pulling tasks http://t.co/sDokwnIWlf