Have they ever had their wings clipped?
I would recommend having the females wings clipped, it will make her easier to train and tame.
Try the bathroom trick. Pick her up, hold her in your hand (you may want to wear gloves the first time) then go to the bathroom, close the door, turn off the light and wait for around 5 minutes.
Do this every day. Soon she'll begin to trust you. That and clipping her wings will make training and taming possible.
Trust is the biggest milestone. Once you've established trust, are consistent, spend time with her daily, she'll be trained in no time.
Same for the male.
Try it for a week, let me know if you've made any progress after that week.
