I know this sounds bizare.. but.. when i bought my female budgie home, her cere was chocolate brown and she was in good breeding condition.
She was in quarantine away from my boy budgie for 4 weeks, then next to him in her cage for a week, when i cleaned out both their cages during the week that they were next to each other they were allowd out to play and they got along famously. i bought a bigger cage with the intention of introducing them to the new cage at the same time, which worked a treat. they flirted with each other and got along well, she is not yet 12 mths until next month so i have not put the breeding box in and now her cere has changed colour and she wants nothing to do with my boy..??
Does it look like the 'honeymoon' is over?? Why would her cere change??
He is still biting us and protecting her, but, she claws at him when he tries to feed her and she kicks him off his swinging perch (literally) and won't let him sit in his favourite places..she will sit in the food and not let him have any till she is finished..
They are inside in the main combined living/kitchen area, could she be stressed from the postion??
i also noticed when all the flirting was going on in the first few weeks, they were both loosing lots of feathers. they were downey feathers not flight feathers..