Hormonal and experiential factors influencing the nestbox oriented behaviour of budgerigars (Melopsittacus undulatus).
D000818:Animals; D001717:Birds; D004958:Estradiol / Q000494:pharmacology*; D005260:Female; D008297:Male; D009425:Nesting Behavior / Q000187:drug effects*; D011374:Progesterone / Q000494:pharmacology*; D013739:Testosterone / Q000494:pharmacology*
D013739:Testosterone; D011374:Progesterone; D004958:Estradiol