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Discussion Starter · #1 · (Edited)
Need HELP...DF YF & SF YF in juvenile plumages

Hi skillful budgie breeders,
I had been sorting baby DF YF 2 skyblue normal spangle budgies and SF YF 2 cobalt normal spangle budgies all in juvenile plumages, but I had difficultlies in telling which are double factor yellow-faced type 2nd and single factor yellow-faced type 2nd, in juvenile plumages.

Father was SF YF 2 cobalt and mother was DF YF 2 skyblue, both parents are normal spangle.

I do not know how to tell DF YF 2 from SF YF 2 in juvenile plumages.

Can you please help me...:S
 

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Do you have pictures? That would be helpful :)
 

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Discussion Starter · #4 · (Edited)
I had been studying these yellow-faced blue budgies in both adult and juvenile plumages.
I only have three single factor yellow-faced skyblue type 2nd and three double factor yellow-faced skyblue type 2nd.

The single factor yellow-faced skyblue type 2nd in adult plumage and juvenile plumages have pale yellow plumages, with bluish-green body.

The double factor yellow-faced skyblue type 2nd in juvenile plumage had creamy white plumage, with greenish-blue body which stay same colour thought life.
Adult plumage paler than single factor yellow-faced skyblue type 2nd.





Single factor yellow-faced skyblue type 2nd normal spangle male...





and his wife...double factor yellow-faced skyblue type 2nd normal spangle female...





...and son...double factor yellow-faced skyblue type 2nd normal spangle male.

4-month-old immature male double factor yellow-faced skyblue type 2nd normal spangle in post-juvenile moult, note new pale yellow adult feathers replacing white juvenile feathers. in 2-3 months time he will look like his mother.



Single factor yellow-faced skyblue type 2nd normal spangle male and his wife...double factor yellow-faced skyblue type 2nd normal spangle female, together.
 
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