What do wild baby bunnies eat ???
formula from a pet supply store should help but unfortunately I have had wild kits(baby bunnies) and tame ones I bred that the mother gave up on and none of them have survived on the store bought formula... if they are old enough to be off mothers or substitute milk regular pellet food for rabbits will be fine.
Do not keep wild bunnies.
They are dangerous.
Let them back into the wild.
I gave my baby bunnies formula. I went to petsmart and got it there