It also may have splayed leg so unable to stand. Do a search on that to determine if that is the problem. Basically chicks legs get oriented through the process of pushing themselves out of the shell. To correct splayed leg you use something like a band aid to make mini leg shackles. Keeping the legs the proper distance apart yet allowing the chick to stand and walk.
And Fred's right on about needing to get water into the chick, try some sugar in the water to help perk it up and hopefully it will be able to stand and feed with the leg support.