Can someone who's good at telling the gender of young/baby budgies make an educated guess as to what gender Georgie here is? I can't quite tell if the cere is pink or blue or white... Also this is my first post here, Hi! Also if somekne could make a guess at his/her age that would be super...

These are my budgies Alpha on left and Charlie on right ... I got them 3 days back from a friend... I want to know are they looking ready for breeding?... should I place a nesting box?