Mother of abandoned baby 'Mai' comes forward

The mother of a 12-month-old baby girl who was abandoned on a western Sydney doorstep in the dark of night has come forward to police.

The woman attended Auburn police station at about 2.15pm AEST today is now being interviewed by police to determine the circumstances of the incident.

The girl, who showed signs of being much-loved and well cared for, was found on the doorstep of a Kirkham Road home in Auburn at about 9.50pm on Monday night.

The resident had answered his doorbell to find the young girl dressed in a black and white top, grey shorts and wrapped snugly in a light green blanket. A bag with a bottle and baby formula was also left on the doorstep.

Auburn police Superintendent Phil Rogerson said the girl was very neat and tidy.

Police say it's unclear why she was dropped off at the particular house in Auburn, although there were baby strollers outside it.