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Author (up) Title Year Publication Serial Volume Pages
Mettke-Hofmann, C.; Winkler, H.; Leisler, B. The Significance of Ecological Factors for Exploration and Neophobia in Parrots 2002 Ethology 5617 108 249-272
Tebbich, S.; Taborsky, M.; Winkler, H. Social manipulation causes cooperation in keas 1996 2189 52 1-10