title: Influence of photoperiod on oestrogenic induction of nest-building in canaries.
mesh_terms: D000818:Animals; D002171:Canaries / Q000502:physiology*; D002369:Castration; D003624:Darkness; D004967:Estrogens / Q000494:pharmacology / Q000502:physiology*; D005260:Female; D008027:Light; D009425:Nesting Behavior / Q000187:drug effects; D010507:Periodicity; D010786:Photoreceptor Cells; D011437:Propylamines / Q000494:pharmacology; D012621:Seasons; D012663:Semicarbazides / Q000494:pharmacology
chemical_list: D004967:Estrogens; D011437:Propylamines; D012663:Semicarbazides