Will a female rainbow lorikeet lay eggs without a mate?

Yes, a female Lorikeet can and sometimes will lay eggs without a mate. In fact, most female birds can do this. Of course the eggs will not be fertile, though the hen (female bird) may sit on them as if they were.

It's not healthy for our pet birds to lay eggs. Many problems may arise, including nutritional depletion or egg binding (the egg gets stuck).

There is more information about how to prevent egg laying here www.4AnimalCare.org/birds