Normally which ovary and oviduct is functional in chicken

Normally Left ovary and right oviduct ovary and oviduct is functional in chicken.
The chicken usually has only one. The right ovary stops developing when the female chick hatches, but the left one continues to mature. The ovary is a cluster of sacs attached to the hen's back about midway between the neck and the tail.
The function of the oviduct is to produce the albumen, shell membranes and the shell around the yolk to complete the egg.