Can Anyone Tell Me The Mutation Of These Two Pale Yellow And Blue Babi

Hi All,

I'm really unsure as to the mutation of these two brothers. They are both a lovely pale yellow, with blue on their lower backs, underside of the tail and chest. Couldn't find pictures of any similar mutations online, so thought I'd ask here

Any thoughts would be much appreciated!

Here is the family (Hen - back left; Cock - back right; Sibling - front):

http://s284.photobucket.com/user/DanteIggy/media/Budgies/Budgie%20mutation9_zpsohl63off.jpg.html

Hen had 5 babies - 3 were pale yellow & blue, 1 green and 1 yellow and olive.

Here's male budgie 1:

http://s284.photobucket.com/user/DanteIggy/media/Budgies/Budgie%20mutation2_zps4dx6t5bw.jpg.html

http://s284.photobucket.com/user/DanteIggy/media/Budgies/Budgie%20mutation1_zpsylywitmf.jpg.html

http://s284.photobucket.com/user/DanteIggy/media/Budgies/Budgie%20mutation3_zpsadd8soeb.jpg.html

Younger male budgie 2:

http://s284.photobucket.com/user/DanteIggy/media/Budgies/Budgie%20mutation7_zpsfkiz0f24.jpg.html

http://s284.photobucket.com/user/DanteIggy/media/Budgies/Budgie%20mutation6_zpsbsbpykfs.jpg.html

http://s284.photobucket.com/user/DanteIggy/media/Budgies/Budgie%20mutation5_zps38tz3yuh.jpg.html

Other sibling:

http://s284.photobucket.com/user/DanteIggy/media/Budgies/Yellow%20Baby2_zpskasytg36.jpg.html

Edited November 10, 20159 yr by Dante