I can say 1 thing and even though its your first season with gouldians Amca Im sure u will agree, to noobs, growing or at least feeding plentiful quantities of half ripe grass seeds will do wonders for your gouldian nest of young or any grassfinches for that matter, I think its the key to success over sprouted seeds although many might disagree with me on this one

Your Pastel boy definately looks the goods even this time of year

what ever your doing keep it up.
I still heard a rumour, started a thread about it but no bites...that blue plus yellow is a healthier bird than blue alone