we've rescued many baby bunnies. and most do not survive. we have learned allot about it though.
-we first heard that they need to be fed every 4 hours... and in doing so we overfed them and they died. in reality, baby bunnies only feed about twice a day. try letting 12 hours go by before feeding again.
-do you know how to lightly pinch the skin to see if it's dehydrated? if the skin stays pinched for longer than a second it needs more fluids.
-the mother turning the baby's away due to human cent is an old wives tale to keep children from disturbing nests. rabbits, deer, birds, squirrels, cats, and everything else won't turn their babies away from human sent.
-mothers eating their dead young is natural, it gets the body away from the nest and predator smell, and provides the mother with much needed proteins. it is sad when a rabbit looses a whole litter but it is common.
-My wife raised rabbits when she was a child and most rabbits don't care for their first litter.