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- 2015
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Mark
A novel form of spontaneous tool use displayed by several captive greater vasa parrots (Coracopsis vasa)
(
- Contribution to journal › Article
-
Mark
Subadult ravens generally don't transfer valuable tokens to conspecifics when there is nothing to gain for themselves
(
- Contribution to journal › Article
- 2012
-
Mark
Hand preference for bimanual and unimanual feeding in captive gorillas : Extension in a second colony of apes
(
- Contribution to journal › Article
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