I have two female coturnix recently started to make very loud call at night. I have all quails in the yard, straight females. The light went off around 9pm, and they would start their call around 10pm, and do it about once every 10 minutes all the way until dawn. It starts to get really annoying. Does anybody have similar experience? Why would they do it when they are supposed to be sleeping in the dark? well technically not completely dark since some city light or moon light find ways into my yard, but they don't really do this between dawn and evening. Could it be too cold? Mating call in winter??? And is there anything I can do about it?