1. The effects of castration and androgen replacement on song, courtship and aggression in zebra finches (Poephila guttata);Arnold;J. Exp. Zool.,1975
2. Short-term effects of testosterone propionate on the behaviour of young intact male domestic ducks (Anas platyrhynchos);Balthazart;Psychol. Belg.,1974
3. A correlation analysis of the daily distribution of displays and sexual behaviours in semi-wild mallards;Balthazart;Psychol. Belg.,1976
4. Effects of exogenous gonadotropic and steroid hormones on the social behavior of male domestic ducklings;Balthazart,1976
5. Effects of exogenous hormones on the reproductive behavior of adult male ducks;Balthazart;I. Behavioural effects of intramuscular injections,1976