Cockatails eggs won't hatch?

[Nickv0195]

So my grandmother has two cockatails, one female and one male, they lay eggs a lot but they never hatch. I read online that it could be because if the diet they eat, she wants the eggs to hatch. So what should I do?

 

[aznmexaggie]

They could be infertile eggs. Are you 100% sure they are male and female - were they DNA sexed? Some color varieties of cockatiel cannot be sexed accurately on apearance. I once had two female cockatiels and one of the females constantly laid infertile eggs, expending all her energy and calcium reserves on eggs which would not hatch (when candled, the eggs looked to just contain mostly albumin).

 

[Riven]

I second that. If her diet is good enough to produce the eggs, they should be fertile if they are a male and female pair, and both fertile animals.