Baby Pigeon: 14 to 21 Days Old

[MuffinBabe]

I have found a baby pigeon on the restroom window in which it's sibling has mysteriously disappeared, and the mother has not returned for perhaps three days. My heightened concern for the remaining squab has rendered my choice of raising it as my own.
Not sure how to feed it, I sprawled some regular vitamin seeds on the floor of the card board box, and watched as it tried to pick it off the floor. I don't know if it ever got in its mouth so I am worried if she is old enough at the tender age of 14 to 21 days to being capable of picking regular seeds from the floor to her mouth? Or should I still be using a syringe and warm liquidated foods? Other than that, she seems to be quite healthy.
Also: I would like to give it a bath, but am worried that she might be too young for this. However, I do want her to be as healthy as possible and that is hygeine, so should I give a 14 to 21 day old baby pigeon a bath or not? Thank for your help guys! LOL I am desparate his name is Muffin, and he is so adorable I will have trouble releasing it