have been reported. Copulation can still happen while the female is pregnant. Female red-shanked doucs go into estrus every 28-30 days and with it, there is a reddening of their rump.

Menstruation and pregnancy

Female doucs have an average menstrual cycle of 26.4 days, with their follicular phase lasting an average of 13.1 days and their luteal phase lasting 14.8 days. Estradiol and estrone are the main types of estrogen present in female red-shanked doucs.

Births

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