Hey there. My cockatiel pair have 2 babies. They are around 4-4 1/2 weeks old. They are not handfed. They are parent fed. The babies have not begun weaning, but they have begun to walk out of the nest and explore the cage. They have also started to lose weight and begin to flap their wings. But the mama cockatiel just recently laid a second unfertilized egg. I removed the first one to unencourage her to lay more. She has been wanting to mate again, but papa cockatiel says no. I don't want her to lose more calcium by laying unfertilized eggs. What do I do!? Are the babies ready for me to take the nest away so mama wont lay anymore in there? Or should I just keep taking the eggs out? What do I do!?