What could i do to help it?

i have a chick that was left by its mother and wen i went 2 go get it it fell on its back and couldnt get backup which i thought was weird so i put it in a box in my house and it kind of scuffles around like the penguin off happy feet and cant clean itself without falling over its feet look to big 4 its body it cheeps and eats and does other normal stuff but it has a hard time getting around and falls alot! it also nods its head like its goin to slleep but then jerks it back.