I have a female and male pair of parakeets and for the past week and a half my female has spent almost all of her time in the nesting box. Pulling out feathers, scratching around and puffing herself up like a broody hen. She’s become territorial of the nesting box and does not like when I go near it. She’s very obviously brooding but there’s no eggs. Will she start to lay soon? Would dummy eggs help her to start laying? What can I do to help her lay?