A Yellow Tipped Beak on a BlackHead gouldian means it is genetically YellowHead but can note express the color because it doesn't have the RedHead gene. Doesn't mean it is split to YellowHead. When bedding this bird will pass on all the genetics of a YellowHead.Your boy is beautiful! He has a red tipped beak whereas mine had a yellow tipped beak (means mine was split to yellow head, yours is split to red head).
A red tipped beak BlackHead is just a BlackHead. BlackHead can not be split to RedHead. All RH and BH have yellow tipped beaks, YH has yellow tipped beaks