10.6084/m9.figshare.5057512.v1 Wolfgang Goymann Wolfgang Goymann Pamela Flores Dávila Pamela Flores Dávila Duration of increased testosterone production after GnRH injections from Acute peaks of testosterone suppress paternal care: evidence from individual hormonal reaction norms The Royal Society 2017 hormonal reactive scope parental care trade-off gonadotropin-releasing hormone reaction norm 2017-06-01 10:15:32 Journal contribution https://rs.figshare.com/articles/journal_contribution/Duration_of_increased_testosterone_production_after_GnRH_injections_from_Acute_peaks_of_testosterone_suppress_paternal_care_evidence_from_individual_hormonal_reaction_norms/5057512 To validate the experimental protocol for this study, we explored for how long a single injection of GnRH elicits a rise in circulating testosterone above baseline levels in black redstarts.