title: Mate choice and male behaviour following castration and replacement of testosterone in mallards (Anas platyrhynchos ).
abstract: Male sexual behaviour was controlled by castration and testosterone replacement. The first experiment shows that, within a group of similarly coloured and castrated male mallards, females preferred males treated with testosterone. The second experiment shows that a testosterone-treated male was always preferred by the females, irrespective of plumage colour, in a choice between a wild and a white mallard drake. The results shows that testosterone dependent male cues is important in mate choice in the mallard duck.
authors.affiliation: Department of Zoology, University of Stockholm, S-106 91 Stockholm, Sweden.
authors.forename: T
authors.initials: T
authors.lastname: Klint