Maternal androgens increase sibling aggression, dominance, and competitive ability in the siblicidal black-legged kittiwake (Rissa tridactyla). by Martina S Müller, Yvonne Roelofs, Kjell Einar Erikstad, Ton G G Groothuis

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GnRH--a missing link between testosterone concentrations in yolk and plasma and its intergenerational effects. by Wendt Müller, Ton G G Groothuis, Vivian C Goerlich, Marcel Eens

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Visual adaptation and microhabitat choice in Lake Victoria cichlid fish by Daniel Mameri, Corina van Kammen, Ton G. G. Groothuis, Ole Seehausen, Martine E. Maan

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The relation between handedness indices and reproductive success in a non-industrial society. by Sara M Schaafsma, Reint H Geuze, Jessica M Lust, Wulf Schiefenhövel, Ton G G Groothuis

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Parents and early life environment affect behavioral development of laying hen chickens. by Elske N de Haas, J Elizabeth Bolhuis, Bas Kemp, Ton G G Groothuis, T Bas Rodenburg

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