Costas claras Castanho

Much detailed information is only available in English:

The combination of Fawn and Light Back requires crossing over to happen.

The combination can be extremely difficult to distinguish from Chestnut Flanked White Fawn

Light Back Fawn Zebra Finch male
Light Back male.

Individual mutations used in this combination

Fawn

The Fawn mutation changes the black and grey pigments to fawn (brown) pigments.

Light Back

Light back causes a general reduction of the body colour of the bird, while keeping the black markings intact.