The ovary is the female Gonad homologous to the male Testes. It is ususally a paired organ in domestic species but in the bird only the Left Ovary is present. The structures in ovary are undergoing constant changes throughout the oestrus cycle from the [[The Ovary_-_Follicles_-_Anatomy_%26_Physiology|Follicles]] containing [[The Ovary_-_Oocytes_-_Anatomy_%26_Physiology|Oocytes]], to the formation of [[Corpus Haemorrhagicum]], [[The Ovary_-Corpus Luteum_-_Anatomy_%26_Physiology|Corpus Luteum]], and finally [[The Ovary_-Corpus Albicans_-_Anatomy_%26_Physiology|Corpus Albicans]]. | The ovary is the female Gonad homologous to the male Testes. It is ususally a paired organ in domestic species but in the bird only the Left Ovary is present. The structures in ovary are undergoing constant changes throughout the oestrus cycle from the [[The Ovary_-_Follicles_-_Anatomy_%26_Physiology|Follicles]] containing [[The Ovary_-_Oocytes_-_Anatomy_%26_Physiology|Oocytes]], to the formation of [[Corpus Haemorrhagicum]], [[The Ovary_-Corpus Luteum_-_Anatomy_%26_Physiology|Corpus Luteum]], and finally [[The Ovary_-Corpus Albicans_-_Anatomy_%26_Physiology|Corpus Albicans]]. |