The best thing to do is to keep this bird in the little nest and keep it warm and dark. In the morning try to find a wildlife rehabilitator to transfer this bird too. To find these individuals try starting with asking local veterinarians, your local animal control office, or the local DNR office. If you can't find someone to transfer this bird to by the afternoon then the best thing to feed temporarily orphaned baby birds is Exact® baby bird mix. This can be purchased at almost any pet store and many of the very large retail stores. The mixture is prepared as directed and the birds should be fed every 2-3 hours from sunrise to sunset. Be aware that many states only allow you to legally keep wildlife for 48 hours before transferring them over to a licensed wildlife rehabilitator. I hope this helps, best wishes.

Dr. Dan