I have a pair of cockatiels Tinsel and Jessie. Jessie is a very yellow lutino hen, and Tinsel is a wild type male. Jessie is a female as she has barring and spots on her wings and tail. She also exhibits hen mating behaviour (hasn't laid and egg though). My mom has seen them mating but I haven't. Yesterday I put a nest box in their cage and Tinsel nibbled at it adjusting it I believe. He then sat in it for a while. But whenever Jessie goes in Tinsel will go in and Jessie will come out. I moved tinsel to his old cage, and Jessie immediately went into the box. I am unsure of whether Jessie and Tinsel are bonded. I've seen them preening each other and sitting together as well as them mating, but they don't eat together. Any tips on what to do?