A clear view of the back of her back foot is the best. Males have tarsal spurs on the hind feet, females don't. She wont need a laying bin until he is mature. She will show yellow-mustardy spots when she is mature. At that point (around 4-6 months old) she will need a laying bin. A pot or bin at least 12 inches deep and 12x8 inches wide/long filled with moist play sand or organic soil will work well.