Currently I have my mating pair housed together and I seem to have no luck getting them to mate. The male seems to be keen, but both if them only come out at night and I've yet to observe them actually mating. Neither of them seems to be feeding actively. Is there a way I can tell if they have mated? I have heard that they tend to eat more around the time that they start mating so I will continue to provide them with lots of food.