Well....for starters, you really didn't tell us much. Are these eggs INFERTILITY or has she been bread by a male? It is possible for older birds to lay either. If she HAS been bread, just keep an extra close eye on her due to her age.
Hi, sorry about the lack of info. The eggs are not fertile and she has never been breed before. She was constantly having clutches when she was younger then stopped for about 5 years. She is the only cockatiel we have. I think I figured it out though. 5 years ago we bought a male parakeet. That is when she stopped laying eggs. Sadly our parakeet died a few days ago. I think she knew he was passing and the egg laying may have been a stress reaction? Or something due to that? Since he has passed she has no interest in the eggs and has not sat on them in a few days. Thank you for responding.