infertile eggs

Mom and dad are still sitting on 5 infertile eggs (second clutch). First one was laid 17th January. Just took the babies a couple of days ago so didnt want to stress them further. What should i do? they wont abandon them, they are both in the nest constantly sitting on them :(

Stormy laid her first egg yesterday. She is showing no interest in it at all, in matter of fact even was rolling it around the cage earlier like it was a toy. I know that theres a chance that she might show an interest in it (I'm fully expecting another egg tomorrow), but when should I take it away?

Hey Everyone! My cockatiels having been attempting to mate, however I have never actually seen them in the actual act itself. My male has only just started to get the idea that he needs to do something when my female calls to him... but he doesn't seem to know what to do yet.... My female has...