title: Plasma testosterone levels during the testicular cycle of the redwinged blackbird (Agelaius phoeniceus).
mesh_terms: D000818:Animals; D001717:Birds / Q000502:physiology*; D008297:Male; D009929:Organ Size; D010775:Photic Stimulation; D011863:Radioimmunoassay; D012621:Seasons; D013737:Testis / Q000502:physiology*; D013739:Testosterone / Q000097:blood*
chemical_list: D013739:Testosterone