Funny black head gouldians are my favorite too - they are the 2nd “normal” since black is recessive and Red head is dominant.This is a very nice video. My only conclusion is that your signature is really inaccurate.
I especially liked the black headed gouldian finch, the red-black canaries, the white cockatiel & the last budgie (light coloured)!
And even more, cause I don’t have them allWow, @finchly !
Today I learned that Lady Gouldians come in way more colors than I knew!