The role of the endocrine system in the control of certain biological rhythms in birds.
D000818:Animals; D001717:Birds; D005260:Female; D006405:Hematology / Q000592:standards*; D010060:Ovulation; D010507:Periodicity; D013961:Thyroid Gland
ICSH; OVULATION; PERIODICITY; THYROID GLAND