Seasonal changes in the reproductive system of the female white-crowned sparrow, Zonotrichia leucophrys gambelii, in captivity and in the field. I. The ovary.
D000818:Animals; D000836:Animals, Zoo; D001717:Birds / Q000033:anatomy & histology*; D002784:Cholesterol / Q000032:analysis; D004967:Estrogens / Q000378:metabolism; D005260:Female; D006065:Gonadotropins, Pituitary; D008055:Lipids; D008938:Mitosis; D009929:Organ Size; D010053:Ovary / Q000032:analysis / Q000033:anatomy & histology* / Q000254:growth & development; D010063:Ovum; D012621:Seasons
D004967:Estrogens; D006065:Gonadotropins, Pituitary; D008055:Lipids; D002784:Cholesterol