This is tough. Both parents are whitefaced, so both have two whiteface genes. Female is "ino", which is lutino + whilteface = albino. The male is whiteface but could also be carrying the "innmo gene. However, his whiteface genes and her whiteface genes make it "impossible" for them to have yellow babies. If "the father" of these babies isn't carrying the ino gene the lutino baby is a female.
Are you sure the female didn't cheat on him? Or that eggs from another pair didn't get mixed up? Marriages have been broken up when two blue-eyed people have a dark brown eyed baby (even though it can happen)!
So, I'm stumped. All I can say is those babies are so freakin' cute!
I really hope these birds are being fed something other than sunflower seed! It's really bad for both the parents and their babies and that cage appears to be full of it.
One other idea is that the female isn't albino but dark eyed clear dominant pied. Are her eyes red? Or black? Assuming they are black, and she's not albino but dark eyed clear, I still can't explain how she and the whiteface male could have a yellow baby because dark eyed clear is a heavy dominant pied mutation combined with a recessive whiteface mutation and yellow can't be expressed.