I can always tell when one of the Parrots is laying eggs, because thats when i see virtually all the rainbow's in the bottom third of the tank together instead of mid/upper levels.
Basically, a Parrot will lay eggs (happens about every 3-4 weeks, different parrots), then the parrot will just abandon the eggs and the rainbow's practically form a que to eat the eggs

Anyone else had Parrots laying eggs, i know the males are 99% in-fertile so i read, but i never even see a male trying to fertilise them now, it's almost like they (both the female and males) have realised,
it aint happenin' 