The timing of oviposition and ovulation in the quail (Coturnix coturnix japonica)

Synopsis An extensive series of experiments was performed to assess the common Coturnix quail as a laboratory bird for research on ovulation. The results indicate that the timing of the sequential events of ovulation, egg formation and lay in Coturnix is sufficiently constant to permit access to the physiological processes which determine ovulation and to provide convenient means for assessment of results. Special problems of method and limitations in the use of the quail are discussed. Differences in the timing of sequential ovulations in chickens and Coturnix are described. It is concluded that Coturnix will be a valuable subject for comparative studies on ovulation in birds.