My scarlet chested parakeets laid four eggs in late October. On the 18th Nov two hatched. The other two disappeared, I presume eaten by the parents. The male is about 18 months old and I'm told that the female is about 8 months, maybe more. They are great parents. The female is a great mother whilst dad is wearing himself out eating and regurgitating for four. The babies weigh in at 39g each. They are growing so quickly.