People in the past said terra cotta is a type of blessed white bird or albinos. But now it’s clear that it’s another type of colour varieties named "si mo mai" means - a colour like new terra cotta pottery .

terra cotta mutation in spotted necked dove is also a beautiful ones . terra cotta have less the depth of body colour than normals. Their black markings on feathers of normals appear in a light version in terra cotta. due to the light colour of the whole body, there are light , medium and dark in many colour shades . if two light colour group are paired together then very weak colour dove will be produced .

terra cotta gene is a sex linked gene in inheritance. A sex-linked gene is any gene located on the sex chromosome or the "Z" chromosome. The male dove has two Z chromosomes. Females have only one Z plus a "W" (W means no chromosome). Females dove are always terra cotta, they are always visual and can never be split for terra cotta, whereas the males can be either terra cotta as well as normal split terra cotta. For example you can have a normal male split for terra cotta and he is capable of breeding terra cotta females even if paired to a normal females, but to pair terra cotta female to a normal male you will only breed visual normal, the males being split albinos. terra cotta is a type of sex linked gene.