lil baby crow

A most unusual event happened today..
I was at a friend's house, and their yard guy found a baby crow, not extremely young but still not full-feathered, which had apparently blown down from its nest in yesterday's wind and rain storm.
I took a few pictures

and then we put it as high up in the tree as we could.
It is about 9 inches from beaktip to tailtip, and as you can see in the pix, there are some bare spots of skin, and some empty areas still, in the secondary feathers.
The parents seemed to be slightly aware of it, as they just continued about their day, and I tried to place some berries up on to the branch next to it with a long stick after a few hours.
Now that it is almost sunset, the parents are trying to lure it back up with a lot of calling, and it has finally hopped maybe 20 feet upwards, but it is still well short of the nest.
I went to the IRC channel to see if anyone had some additional ideas, and most said to keep cats away is about the most we can do.
Hopefully by tomorrow it will get to the nest without falling, but I was wondering how long it can go without food or parental care. I think it still needs beak-feeding, since it wasn't too interested in the berries. At last check, it was trying to nibble the oak leaves on the branch where it is perched.
If anyone has any ideas, please post here, or tell someone at IRC and I'm sure to get your message.
Thanks much.. :>