The gouldian finch has many color variations. These are known as mutations. The first form of gouldian mutation is the white breast. It is the same as the normal gouldian except it has a white colored breast. It is found in all three head colors.
The white breasted gouldian is recessive. It is either visible or hidden. The hidden or unseen white breast is what is known or termed as a split. That is split for the white breast. It is possible that a gouldian may be split for white breast as it is not visible.
The only way you can be sure a gouldian finch has the mutation of white breast is if one of its parents has a visible white breast the other parent can even have no white breast what so ever. If this is the case no visible white breast will be present as all the offspring will be split for white breast.
The ideal way of breeding gouldian finches for this mutation to guarantee that the white breast mutation is passed on to all of the young is with one parent bird to have a white breast and the other parent bird to be split for white breast. This theoretically produces half of the young gouldians to have a visible white breast and the other half to be split for white breast. |