Help identifying silver gouldian head color

[camellia]

Hi there, I've got a newbie question.

I have a silver white chested male gouldian. The breeder called him a straw head silver. I was assuming that he was a red head so I was very surprised to see that one of his offspring has a yellow head. I was wondering if there is any way to determine if he is red head or yellow head.

He is paired with a red headed purple chest green split to blue back hen.
This pair recently produced their first clutch and the offspring were:
yellow head, purple chest, green back male &
red or yellow? head purple chest, dilute? blue male (I'm not real sure on the coloring of this guy)

If I am doing the genetics forcast correctly then the silver male is single factor due to the fact that this pair produced a green back? Please correct me if I am wrong. I am very new to the genetics thing.

I will try and post pictures of the silver male

and his offspring

Also as a side question: I got this silver male from a rather sketchy source all the other gouldians that I purchased from this source passed away within a few months time. Heartbroken I gave up on breeding for 6 months so he was essentially quarantined for that time since he and the parsons were the only finches in my house during those 6 months. I treated all three with Iverlux, Amoxitec and probiotics. In hindsight I am wondering if that was enough of a quarantine prior to introducing him to the new hen and if there is anything that I should have or should be doing differently. They get BRU brand seed and soft food, and have access to spirulina, hatched, FVite, cuttle bone and ground oyster shell.

[Meagan83]

Visually it's impossible to determine. But I just wanted to say he is lovely, and his sons are quite handsome too.

[wilkifam]

He is very handsome!

Lori

[debbie276]

There is no way to visually tell a RH from a YH Blue or YellowBlue. If you got a YH chick either both parents are split to YH or the male is YH and the hen split to YH. Also you are correct that your male is a SFYellowBlue because you got a Green chick. Because he's a WB the body is visually white instead of Blue.
They look very nice, best of luck

[camellia]

There is no way to visually tell a RH from a YH Blue or YellowBlue. If you got a YH chick either both parents are split to YH or the male is YH and the hen split to YH. Also you are correct that your male is a SFYellowBlue because you got a Green chick. Because he's a WB the body is visually white instead of Blue.
They look very nice, best of luck

Thanks that helps a lot. I was afraid that there would be know way to tell on the head color.