I have a pair of zebra finches that have raised several broods in the last 2 years. NOw the female is not laying any more. He is busy carrying everything into the nest but no eggs! Do they get too old? I dont think she is over 3 or so...Her daughter is laying like crazy but not sitting on any eggs at all. She has a mate with her too. I was hoping to make enough of them to put them in an aviary this summer. Any ideas what to do? TErri O