So my cockatiels are around 2 years old and they mated and layed fertile eggs! They had a cluth of 4 eggs but they fighted and one egg cracked, so now there are three. I dont want another egg to crack. They are fighting wildly to decide who will incubate the eggs. I have separated them for a while but they are screaming to see the eggs. And I candled the egg and i am sure that they are fertile eggs. If they have babies will they be able to manage till then? And tiny grey dot like spots are appearing, why is that? And when i candled it i see veins and movement. Is this grey thing bad?