Need Advice: Rescued Finch baby

[EmilyGrace]

If I'm doing the wrong thing, please let me know. But don't be unkind, I'm trying to do the right thing by this little baby.
At my workplace there's a lot of birds which nest in the rafters, we've tried to discourage them but they always find a way in somehow and make their nests. A baby bird fell bird fell from a nest today. This is the second time this season that babies have fallen from the nest, and the first set were placed in a box outside on a high self (at the advice of the audobon society) hoping that the parents would continue to feed them. The babies (3 of them) all died. This newest baby is older (he has flight feathers just starting to come in, and can stand awkwardly) and was more vigorous so when I saw him I offered to take him to the audobon society for rehabilitation. I did this because I didn't want the nestling to die, since the other strategy hadn't worked.
So the baby is under my care until tomorrow afternoon when I can take him in to the audobon society. They would'nt come get him and that's the earliest I can manage. So I have him in a snug little box with a shredded paper towel nest in my home. I've covered it with a towel to keep him from getting streesed. Here's the problem: I know birds feed their babies amost constantly, and I know he's hungry (he didn't eat the 3/+ hours that I was at work, and I'm hearing him hunger-chirp now). But he won't eat. I smushed up some worms and offered little bits to him with tweezers, but he wouldn't take it. And we're out of bird seed too. What am I doing wrong, and are there any alternative foods? Please help me, I know he probably won't survive anyway, but I want to help him if I can.

[Splashstorm]

I don't think finches eat meat, so that's probably why it's not taking the worm. :/