[roxy culver]

Males are sexually mature at six months old, but not mentally ready to be parents til much later. So they can produce babies, they just may not be very good at caring for them. Have you seen any mating going on at all? Some pictures of your birds would help us help you confirm the gender of your birds. (Plus we just like pictures of tiels lol.) Right now its just a wait and see kind of thing, but sometimes hens will lay off a perch and not in a box (or just lay in the cage versus the box) because they know the eggs aren't fertile and this is their way of aborting the eggs. Why do you have a box up if you thought your male was too young?

 

[roxy culver]

Those are male behaviors so it sounds like Rafiki is a boy. Giving a nest box when you don't intend on breeding is never a good idea, as egg binding can happen if you aren't prepared. So I agree with Sarah, as soon as they abandon this clutch, take the box down, as its better for their health.