Its less than a week old it has the egg tooth still on it. Make sure it is warm and in a pinch you can feed it cornmeal till you get some chick starter. That is so weird that it is out in the street at that young. Its very cute and I have no clue what breed it is. If it doesn't want to eat it just may not know how so just tap your finger on the food and see if he eats and you may have to dip his beak to get him to drink.
Good luck!
Arklady
Edit to add... ATTENTION: That looks like a pheasant chick, in which case if it is then you are going to need game cock starter ration for it. But they grow up beautifully. HOWEVER, another warning here... They tend to fly so they need more room per bird than chickens. and it will need a COVERED pen. You won't know what kind unless you look at the various breeds of Pheasants. There should be some around here. A
