Can anyone help with a baby bird?

[GoddessOfGuinness]

A nest tipped in the rain, and two babies fell out. They didn't even have their eyes open. One must have died instantly; but the other is still alive. I picked it up and warmed it in a cotton rag and set it in a plant saucer. There's no way I can get him back into his nest. Even if I had a ladder tall enough, the branches of the yew aren't sturdy enough to support it properly.

It seems to be a catbird, as two adults came unusually close to me when I put the baby in the cloth. But they don't seem interested in feeding him at all. I think they may be feeding another chick that didn't fall.

Any suggestions?