In the last eight years, the boy had lived with his natural mother only seven months.

She had never been able to wean Michael away from his natural mother.

She would act, until the birth of the baby, as its natural mother.

The overwhelming majority of children, 98%, live with their natural mother.

The children were given up by their natural mother, who had periodically left them alone in cars for days at a time.

The term "natural mother" had been in common use previously.

Not all natural mothers are like the parent of baby Peter.

That was a difficult case because she kept running away, going back to the natural mother.

That her natural mother and father have never been married or even intimate?

The natural mother said he had not been legally adopted.