I Like Pigeons

Ever since we started living in this house we have noticed that pigeons have been giving birth in the outer window self or balcony.. They keep producing babies!
Last month a pigeon gave birth to a couple of babies and they started moving on Thursday , but one of the baby died on friday and other one is now alone.. :( It's mother don't visit the alone baby and we feel sorry for it! I don't know what to feed it because its young and afraid of us!