title: [The endocrine system and seasonal biological phenomena in birds].
mesh_terms: D000311:Adrenal Glands / Q000502:physiology; D000818:Animals; D001522:Behavior, Animal; D001717:Birds / Q000502:physiology*; D001823:Body Composition; D001835:Body Weight; D004702:Endocrine Glands / Q000502:physiology*; D006066:Gonads / Q000502:physiology; D007030:Hypothalamo-Hypophyseal System / Q000378:metabolism; D010179:Pancreas / Q000502:physiology; D010902:Pituitary Gland / Q000502:physiology; D012621:Seasons; D012726:Sexual Behavior, Animal; D013961:Thyroid Gland / Q000502:physiology
vernacular_title: Endokrinnaia sistema i sezonnye biologicheskie iavleniia u ptits.