As with other quail, eggs were laid at a rate of one per day (Lambert 1970), with 7-14 eggs per clutch (Hoffmann 1988). An egg averages 29.8 by 21.5 mm is size and weighs 7.6 g (Johnsgard 1988). Incubation time is 19-20 days (Lambert 1970), although clutch sizes have been associated with latitude and length of photoperiod. In Japan, clutch size is 5-8 eggs, while in Russia, clutch size is 5-9 eggs (Johnsgard 1988). The chicks are considered to be mature and able to mate after four weeks old (Hoffmann 1988).
The breeding season varies with location. In Russia, the season starts in late April and continues to early August. In Japan, nesting occurs from late in May and usually ends in August. On the rare occasion, eggs may be found in nests in September (Johnsgard 1988).
Average time to hatching: 17 days.
Average age at sexual or reproductive maturity (male)
Sex: male: 52 days.
Average age at sexual or reproductive maturity (female)
Sex: female: 63 days.