A 30-year-old Australian has been charged with trying to kill her newborn son by abandoning him in a roadside drain for five days before passers-by heard his cries, police said Monday. The week-old baby was in serious but stable condition in Westmead Children's Hospital a day after cyclists found him in a 2.5-meter (8-foot) deep drain beside the M7 Motorway in the Sydney suburb of Quakers Hill, police said in a statement.