When does a baby start sitting, crawling and walking without support?

Q: My eight months old baby girl weighs 6.5 kg and has just started to sit but not without support. She can balance herself well but does not try to sit herself. When does a baby start sitting, crawling and walking without support? Is my baby growing normal?

A:A baby starts sitting with support by five months of age and without support by six months of age and should start crawling by eight to nine months of age, standing with support by nine to ten months, standing without support by 10-11 months and walking by first birthday. Your baby's weight is within normal limits but at the lower end of the normal scale. It may be worthwhile to have your baby examined by a paediatrician for more details.