I had to look into your past posts in order to find the picture
https://talkbudgies.com/attachments/d...3470711780.jpg
https://talkbudgies.com/attachments/d...3470662586.jpg
aluz had told you he was a boy. She is very experienced with budgies. Also, that pic is so clear that it shows Cookie is most definitely a boy. How is the cere 'changing'? It must be turning blue?