Gonadotrophic Hormones Affect Aggressive Behavior in Starlings

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Science  10 Nov 1961:
Vol. 134, Issue 3489, pp. 1522-1523
DOI: 10.1126/science.134.3489.1522


Injections of gonadotrophic hormones into subordinate male European starlings produced reversals in social rank, suggesting that pituitary gonadotrophic hormones rather than gonadal hormones influence aggressive behavior in this species.